Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-r52f-r9v5-66xr
Advisory ID github_osv/GHSA-r52f-r9v5-66xr
Aliases CVE-2026-55464
Summary Snipe-IT vulnerable to stored XSS via Markdown custom field ### Impact CommonMark is configured with `html_input => 'escape'`, which blocks raw HTML injection. However, javascript: URIs in Markdown hyperlinks are not sanitized. A user with `assets.edit` permission can inject a malicious link into any markdown-textarea custom field. Any user who opens the asset detail page and clicks the link executes arbitrary JavaScript in their browser session.
Status Published
Exploitability 0.5
Weighted Severity 4.9
Risk 2.5
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
System Score Found at
cvssv3.1 5.4 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-r52f-r9v5-66xr/GHSA-r52f-r9v5-66xr.json
cvssv4 4.8 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-r52f-r9v5-66xr/GHSA-r52f-r9v5-66xr.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/grokability/snipe-it
006981cccffce1739e24d3b680b676f772f40e2d Other https://github.com/grokability/snipe-it/commit/006981cccffce1739e24d3b680b676f772f40e2d
CVE-2026-55464 https://nvd.nist.gov/vuln/detail/CVE-2026-55464
GHSA-r52f-r9v5-66xr Other https://github.com/grokability/snipe-it/security/advisories/GHSA-r52f-r9v5-66xr
v8.6.2 Other https://github.com/grokability/snipe-it/releases/tag/v8.6.2
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-r52f-r9v5-66xr/GHSA-r52f-r9v5-66xr.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-r52f-r9v5-66xr/GHSA-r52f-r9v5-66xr.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-07-13T15:00:11Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/55xxx/CVE-2026-55464.json

Source Advisory: vulnrichment/CVE-2026-55464

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]