CVE-2026-86738: snipeitapp snipe-it

CVSS 9.3 (critical) · published 2026-09-08

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 (NVD): snipeitapp snipe-it

Fixed in (NVD): 8.7.0

Weakness: CWE-79

Source: NVD CVE-2026-86738

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

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