Description
Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.
Affected products
snipeitapp: snipe-it
References3
- github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-m… PatchVendor Advisory
- github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc0… Patch
- www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injectio… PatchThird Party Advisory
Metrics
- CVSS 3.1
-
8.7
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - CVSS 4.0
-
9.3
CRITICAL
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/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 - EPSS — exploit probability
- 0% percentile: 42 · as of 3 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
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