A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode.

zetlyn/cve-nvd vulnerability cve CVE-2026-90448 known 2026-09-11

https://nvd.nist.gov/vuln/detail/CVE-2026-90448

Properties

cvss6.5
receipt
Source
NVD
Its words
6.5
Read by
field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-10-03 00:06 UTC
Last answered
2026-10-04 12:15 UTC
Original
open at the source
2026-10-03 00:06 UTC6.5
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Malcolm",
            "repo": "https://github.com/cisagov/Malcolm",
            "vendor": "CISA",
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              {
                "lessThan": "v26.06.0",
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                "version": "0",
                "versionType": "custom"
              },
              {
                "status": "unaffected",
                "version": "v26.06.0"
              }
            ]
          }
        ],
        "source": "ics-cert@hq.dhs.gov"
      }
    ],
    "cveTags": [],
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      {
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        "value": "A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode."
      }
    ],
    "id": "CVE-2026-90448",
    "lastModified": "2026-10-02T22:16:55.330",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
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            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
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      "cvssMetricV40": [
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            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
            "modifiedSubIntegrityImpact": "NOT_DEFINED",
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            "privilegesRequired": "LOW",
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            "subConfidentialityImpact": "NONE",
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            "timestamp": "2026-09-14T16:12:33.273539Z",
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        }
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    },
    "published": "2026-09-11T22:16:46.950",
    "references": [
      {
        "source": "ics-cert@hq.dhs.gov",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json"
      },
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      }
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    "sourceIdentifier": "ics-cert@hq.dhs.gov",
    "vulnStatus": "Awaiting Analysis",
    "weaknesses": [
      {
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          {
            "lang": "en",
            "value": "CWE-862"
          }
        ],
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      }
    ]
  }
}
productMalcolm
receipt
Source
NVD
Its words
Malcolm
Read by
field:cve.affected[].affectedData[].product
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-04 12:15 UTC
Original
open at the source
2026-09-29 17:49 UTCMalcolm
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Malcolm",
            "repo": "https://github.com/cisagov/Malcolm",
            "vendor": "CISA",
            "versions": [
              {
                "lessThan": "v26.06.0",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "status": "unaffected",
                "version": "v26.06.0"
              }
            ]
          }
        ],
        "source": "ics-cert@hq.dhs.gov"
      }
    ],
    "cveTags": [],
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      }
    ],
    "id": "CVE-2026-90448",
    "lastModified": "2026-10-02T22:16:55.330",
    "metrics": {
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            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
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            "confidentialityRequirement": "NOT_DEFINED",
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            "modifiedAttackComplexity": "NOT_DEFINED",
            "modifiedAttackRequirements": "NOT_DEFINED",
            "modifiedAttackVector": "NOT_DEFINED",
            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
            "modifiedSubIntegrityImpact": "NOT_DEFINED",
            "modifiedUserInteraction": "NOT_DEFINED",
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            "privilegesRequired": "LOW",
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          }
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        "type": "Secondary"
      }
    ]
  }
}
statusAwaiting Analysis
receipt
Source
NVD
Its words
Awaiting Analysis
Read by
field:cve.vulnStatus
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-04 12:15 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Malcolm",
            "repo": "https://github.com/cisagov/Malcolm",
            "vendor": "CISA",
            "versions": [
              {
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                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "status": "unaffected",
                "version": "v26.06.0"
              }
            ]
          }
        ],
        "source": "ics-cert@hq.dhs.gov"
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    ],
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            "modifiedPrivilegesRequired": "NOT_DEFINED",
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}
vendorCISA
receipt
Source
NVD
Its words
CISA
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-04 12:15 UTC
Original
open at the source
2026-09-29 17:49 UTCCISA
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
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            "product": "Malcolm",
            "repo": "https://github.com/cisagov/Malcolm",
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                "status": "affected",
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              },
              {
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      }
    ],
    "id": "CVE-2026-90448",
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    "metrics": {
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            "modifiedAttackComplexity": "NOT_DEFINED",
            "modifiedAttackRequirements": "NOT_DEFINED",
            "modifiedAttackVector": "NOT_DEFINED",
            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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            "privilegesRequired": "LOW",
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            "subConfidentialityImpact": "NONE",
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          }
        ],
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      }
    ]
  }
}

Text

A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode.