CVE-2026-86738 Snipe-IT before 8.7.0 CSS Injection via Custom CSS
Superusers can inject malicious CSS to steal CSRF tokens from other superusers, leading to account takeover in Snipe-IT.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86738?
CVE-2026-86738 is a critical cross-site scripting vulnerability in Snipeitapp Snipe-It, published on 8 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-86738?
It affects 1 product.
Products include Snipeitapp Snipe-It.
How do I fix CVE-2026-86738?
No fix has been published for CVE-2026-86738 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-86738 being exploited?
There is no known exploitation of CVE-2026-86738 in the wild and no public exploit code.
Other vulnerabilities in Snipeitapp Snipe-It
- CVE-2025-63601 File upload in n/a
- CVE-2026-37709 Snipe-IT has insecure permissions in file uploads
- CVE-2026-116199 Snipe-IT before 8.6.3 Authentication Bypass via Google SSO Callback
- CVE-2022-1380 Stored Cross Site Scripting vulnerability in Item name parameter in snipe/snipe-it
- CVE-2022-1445 Stored Cross Site Scripting vulnerability in the checked_out_to parameter in snipe/snipe-it
Sources
Also known as GHSA-hxfh-ccwg-qrc6, GHSA-pvcw-mp8q-mj39.