CVE-2026-86738

critical · 9.3

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.

9.3

CVSS

0.5%

EPSS (exploit prob.)

42nd

EPSS percentile

2026-09-08

Published

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

Weaknesses

CWE-79

Affected products

Vendor	Product	Affected versions
snipeitapp	snipe-it	>= 3.0.0, < 8.7.0

Check a specific version with /api/v1/cve/match.

References

https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9
https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39
https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-86738