CVE-2026-86738

High

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.

SeverityHigh

CVSS8.7

Exploit probability—

ProductSnipeitapp Snipe-it

PublishedSep 8, 2026

First seenSep 8, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

snipeitapp snipe-it8.7.0 or later

Patches

github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9

Vendor advisories

github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39

Affected products

Product	Affected versions	Fixed in
snipeitapp snipe-it	3.0.0 ≤ v < 8.7.0	8.7.0

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