by Kastro
Paper/Archive/CVE-2026-86738

CVE-2026-86738

grokability snipe-it — Snipe-IT before 8.7.0 CSS Injection via Custom CSS

EPSS 0.5%CVSS 9.3
critical.is priorityof 100
36
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 42.0.420 × 208.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
snipe-it< 8.7.08.7.0CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
VulnCheck (CNA)8.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorygithub.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39patchgithub.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9writeupvulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css