Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server…
cve CVE-2026-86751 1 source, 1 claim · Watch
NVD writes:
Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY. the claim
Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY. the claim
- Severity
- CRITICAL NVD
- CVSS
- 9.6 NVD
- Fixed in
- 8.7.0 NVD
- Vendor
- grokability NVD
- Product
- snipe-it NVD
- CWE
- CWE-73 NVD
How far exploitation has got
- No public code known
- Proof of concept
- Proof of concept, verified
- A Metasploit module
- Exploited in the wild
- Used in ransomware campaigns
Timeline
| 2026-09-09 | first spoke of it: Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY. | NVD |
Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY.
What it is to other things
| affects | snipeitapp/snipe-it NVD |
| made_by | snipeitapp NVD |
In words only, so not counted until a person confirms one:
| made_by | grokabilityNVD says “grokability” |
| affects | grokability/snipe_itNVD says “grokability · snipe-it” |
Every value, with what each source said and its receipt
| Property | Source | Said | Means here | ||||
|---|---|---|---|---|---|---|---|
| Automatable automatable | NVD | no At least one of those steps needs a person. receipt
What the source handed over{
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} | — | ||||
| CVSS cvss | NVD | 9.6receipt
What the source handed over{
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"product": "snipe-it",
"vendor": "grokability",
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} | — | ||||
| Cvss4 cvss4 | NVD | 8.4receipt
What the source handed over{
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} | — | ||||
| Cvss4 vector cvss4_vector | NVD | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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:Xreceipt
What the source handed over{
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},
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| CVSS vector cvss_vector | NVD | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Nreceipt
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| CWE cwe | NVD | CWE-73receipt
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} | — | ||||
| Exploitation exploitation | NVD | poc A public proof of concept exists, or exploitation is trivial. receipt
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| Fixed in fixed_in | NVD | 8.7.0receipt
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| Product product | NVD | snipe-itreceipt
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| Severity severity | NVD | CRITICAL From the CVSS base score at 9.0 and above. receipt
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| Status status | NVD | Analyzedreceipt
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} | — | ||||
| Technical impact technical_impact | NVD | partial The attacker gains limited control, or limited information. receipt
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} | — | ||||
| Vendor vendor | NVD | grokabilityreceipt
What the source handed over{
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} | — |
Every claim, by kind
vulnerability
| Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY. zetlyn/cve-nvd · 2026-09-09 | automatable no cvss 9.6 cvss4 8.4 cvss4_vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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 cvss_vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N cwe CWE-73 exploitation poc fixed_in 8.7.0 product snipe-it severity CRITICAL status Analyzed technical_impact partial vendor grokability | source |