CVE-2026-86738CWE-79cross-site-scripting

CVE-2026-86738

High · published September 8, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
41.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
9.3 · 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
EPSS
0.00487 · 41.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-08T20:18Z
Affected products (1)
ProductVersionsFixed in
snipeitapp/snipe-it≥ 3.0.0, < 8.7.08.7.0
References (3)
https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9 · [email protected]https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39 · [email protected]https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css · [email protected]
EPSS history
Timeline
  • 10 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 08 SEP 15:14Z
    Snipe-IT before 8.7.0 CSS Injection via Custom CSS
    cvelistv5