erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
cve CVE-2026-48855 2 sources, 2 claims · Watch
Red Hat writes:
erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP the claim
erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP the claim
What it is to other things
| affects | erlang/erlang\/otp NVD |
| affects | erlang/erlang\/ssh NVD |
| made_by | erlang NVD |
In words only, so not counted until a person confirms one:
| affects | erlang/otpNVD says “Erlang · OTP” |
What each source says
| Property | Source | Said | Means here | ||||
|---|---|---|---|---|---|---|---|
| Cvss cvss conflict | NVD | 6.5receipt
What the source handed over{
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"ssh_sftpd"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"lib/ssh/src/ssh_sftpd.erl"
],
"programRoutines": [
{
"name": "ssh_sftpd:handle_op/4"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "17.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"ssh_sftpd"
],
"packageName": "ssh",
"packageURL": "pkg:otp/ssh?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"src/ssh_sftpd.erl"
],
"programRoutines": [
{
"name": "ssh_sftpd:handle_op/4"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "5.2.11.8",
"status": "unaffected"
},
{
"at": "5.5.2.1",
"status": "unaffected"
},
{
"at": "6.0.1",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "3.0.1",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"ssh_sftpd"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"lib/ssh/src/ssh_sftpd.erl"
],
"programRoutines": [
{
"name": "ssh_sftpd:handle_op/4"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "8f4224a0d2676b0653d2c71a889a956e8c2c62d6",
"status": "affected",
"version": "08225797f7ef943d0c82a1d9dd6650d94ca2580d",
"versionType": "git"
},
{
"lessThan": "*",
"status": "unaffected",
"version": "8f4224a0d2676b0653d2c71a889a956e8c2c62d6",
"versionType": "git"
}
]
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BF42A5F2-4C27-43FE-B5FA-17A3422B9649",
"versionEndExcluding": "27.3.4.13",
"versionStartIncluding": "17.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "902ED4C3-B9DE-4ABC-9BEA-D23DA4F5D373",
"versionEndExcluding": "28.5.0.2",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F4AB1573-4E81-4338-B65A-B3C94C7249FA",
"versionEndExcluding": "29.0.2",
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},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/ssh:*:*:*:*:*:*:*:*",
"matchCriteriaId": "83A78B2F-66C5-4840-9F31-3A0143B36705",
"versionEndExcluding": "5.2.11.8",
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{
"criteria": "cpe:2.3:a:erlang:erlang\\/ssh:*:*:*:*:*:*:*:*",
"matchCriteriaId": "468A97BF-9BB0-4318-A6E9-CF69EFE385B7",
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{
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],
"negate": false,
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery.\n\nThe SSH_FXP_READLINK handler in ssh_sftpd sends the raw result of file:read_link/2 to the client without calling chroot_filename/2 to strip the backend root prefix. An authenticated SFTP client can create a symlink inside the chroot pointing to /; ssh_sftpd resolves the target to the absolute backend root and stores it on disk. Reading the symlink back via SSH_FXP_READLINK returns that absolute path, for example /data/sftp, instead of the chrooted value /.\n\nThe information disclosed is the absolute filesystem path of the SFTP root directory and of any symlink targets within it. No file contents, credentials, or access to paths outside the root directory are obtainable through this issue alone.\n\nThis vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to ssh from 3.0.1 before 5.2.11.8, 5.5.2.1, and 6.0.1. Whether OTP before OTP 17.0, corresponding to ssh before 3.0.1, is affected is unknown."
}
],
"id": "CVE-2026-48855",
"lastModified": "2026-09-24T21:17:14.143",
"metrics": {
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"scope": "UNCHANGED",
"userInteraction": "NONE",
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"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
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"ssvcV203": [
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"options": [
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},
{
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:22:16.684743Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-10T16:17:09.680",
"references": [
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Mitigation",
"Third Party Advisory"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48855.html"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/erlang/otp/commit/08225797f7ef943d0c82a1d9dd6650d94ca2580d"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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},
{
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"url": "https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
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],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48855"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
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],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
}
],
"sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"vulnStatus": "Modified",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
]
}
} | — | ||||
| Cvss cvss conflict | Red Hat | 4.3receipt
What the source handed over{
"CVE": "CVE-2026-48855",
"CWE": "CWE-59",
"advisories": [
"RHSA-2026:63160"
],
"affected_packages": [
"erlang27-main-27.3.4.17-1.hum1"
],
"bugzilla": "2487603",
"bugzilla_description": "erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP",
"cvss3_score": "4.3",
"cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"cvss_score": null,
"cvss_scoring_vector": null,
"package_state": null,
"public_date": "2026-06-10T14:35:49Z",
"resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-48855.json",
"severity": "moderate"
} | — | ||||
| Cwe cwe | Red Hat | CWE-59receipt
What the source handed over{
"CVE": "CVE-2026-48855",
"CWE": "CWE-59",
"advisories": [
"RHSA-2026:63160"
],
"affected_packages": [
"erlang27-main-27.3.4.17-1.hum1"
],
"bugzilla": "2487603",
"bugzilla_description": "erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP",
"cvss3_score": "4.3",
"cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"cvss_score": null,
"cvss_scoring_vector": null,
"package_state": null,
"public_date": "2026-06-10T14:35:49Z",
"resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-48855.json",
"severity": "moderate"
} | — | ||||
| Packages packages | Red Hat | erlang27-main-27.3.4.17-1.hum1receipt
What the source handed over{
"CVE": "CVE-2026-48855",
"CWE": "CWE-59",
"advisories": [
"RHSA-2026:63160"
],
"affected_packages": [
"erlang27-main-27.3.4.17-1.hum1"
],
"bugzilla": "2487603",
"bugzilla_description": "erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP",
"cvss3_score": "4.3",
"cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"cvss_score": null,
"cvss_scoring_vector": null,
"package_state": null,
"public_date": "2026-06-10T14:35:49Z",
"resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-48855.json",
"severity": "moderate"
} | — | ||||
| Product product | NVD | OTPreceipt
What the source handed over{
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"modules": [
"ssh_sftpd"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
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],
"programRoutines": [
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"name": "ssh_sftpd:handle_op/4"
}
],
"vendor": "Erlang",
"versions": [
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],
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"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
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"changes": [
{
"at": "5.2.11.8",
"status": "unaffected"
},
{
"at": "5.5.2.1",
"status": "unaffected"
},
{
"at": "6.0.1",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "3.0.1",
"versionType": "otp"
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]
},
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"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
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],
"programRoutines": [
{
"name": "ssh_sftpd:handle_op/4"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
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"versionType": "git"
},
{
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"value": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery.\n\nThe SSH_FXP_READLINK handler in ssh_sftpd sends the raw result of file:read_link/2 to the client without calling chroot_filename/2 to strip the backend root prefix. An authenticated SFTP client can create a symlink inside the chroot pointing to /; ssh_sftpd resolves the target to the absolute backend root and stores it on disk. Reading the symlink back via SSH_FXP_READLINK returns that absolute path, for example /data/sftp, instead of the chrooted value /.\n\nThe information disclosed is the absolute filesystem path of the SFTP root directory and of any symlink targets within it. No file contents, credentials, or access to paths outside the root directory are obtainable through this issue alone.\n\nThis vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to ssh from 3.0.1 before 5.2.11.8, 5.5.2.1, and 6.0.1. Whether OTP before OTP 17.0, corresponding to ssh before 3.0.1, is affected is unknown."
}
],
"id": "CVE-2026-48855",
"lastModified": "2026-09-24T21:17:14.143",
"metrics": {
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| Severity severity | Red Hat | moderate A flaw that is harder to exploit, or whose impact is limited. receipt
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} | medium | ||||
| Status status | NVD | Modifiedreceipt
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} | — | ||||
| Vendor vendor | NVD | Erlangreceipt
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"value": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery.\n\nThe SSH_FXP_READLINK handler in ssh_sftpd sends the raw result of file:read_link/2 to the client without calling chroot_filename/2 to strip the backend root prefix. An authenticated SFTP client can create a symlink inside the chroot pointing to /; ssh_sftpd resolves the target to the absolute backend root and stores it on disk. Reading the symlink back via SSH_FXP_READLINK returns that absolute path, for example /data/sftp, instead of the chrooted value /.\n\nThe information disclosed is the absolute filesystem path of the SFTP root directory and of any symlink targets within it. No file contents, credentials, or access to paths outside the root directory are obtainable through this issue alone.\n\nThis vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to ssh from 3.0.1 before 5.2.11.8, 5.5.2.1, and 6.0.1. Whether OTP before OTP 17.0, corresponding to ssh before 3.0.1, is affected is unknown."
}
],
"id": "CVE-2026-48855",
"lastModified": "2026-09-24T21:17:14.143",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 2.3,
"baseSeverity": "LOW",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-48855",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:22:16.684743Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-10T16:17:09.680",
"references": [
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Mitigation",
"Third Party Advisory"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48855.html"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/erlang/otp/commit/08225797f7ef943d0c82a1d9dd6650d94ca2580d"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Patch"
],
"url": "https://github.com/erlang/otp/commit/8f4224a0d2676b0653d2c71a889a956e8c2c62d6"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Mitigation",
"Third Party Advisory"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48855"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Product"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
}
],
"sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-200"
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
]
}
} | — |