What is CVE-2026-86738?

CVE-2026-86738 is a high-severity vulnerability in Grokability Snipe-It, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-08.

How severe is CVE-2026-86738?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Grokability Snipe-It

CVE-2026-86738

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.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (vendor-advisory, Patch, Vendor Advisory)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (Patch, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-86738?: CVE-2026-86738 is a high-severity vulnerability in Grokability Snipe-It, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-08.
How severe is CVE-2026-86738?: High severity. CVSS v3 base score is 8.7 out of 10.