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CVE-2026-86751 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.6 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CNA: [email protected]CVSS-B:8.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/grokability/snipe-it/security/advisories/GHSA-f3vq-g24v-xc2g	CISA-ADP	ExploitVendor Advisory
https://github.com/grokability/snipe-it/security/advisories/GHSA-f3vq-g24v-xc2g	[email protected]	ExploitVendor Advisory
https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-arbitrary-file-read-and-ssrf-via-markdown	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-73	External Control of File Name or Path	[email protected]

Affected Products

Product	Versions
snipeitapp snipe-it	< 8.7.0
CPE cpe:2.3:a:snipeitapp:snipe-it:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 14, 2026	Initial Analysis	[email protected]
Sep 9, 2026	CVE Modified	CISA-ADP
Sep 9, 2026	New CVE Received	[email protected]