CVE-2026-90504 vvbbnn00 WARP-Clash-API authorized missing authentication
Remote attackers can bypass authentication in WARP-Clash-API due to missing checks, affecting unsupported software.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90504?
CVE-2026-90504 is a medium-severity missing authorization vulnerability in vvbbnn00 WARP-Clash-API, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been found in vvbbnn00 WARP-Clash-API up to c7bf2360073959861219b422e51ae86411051b46. The impacted element is the function authorized. The manipulation of the argument SECRET_KEY leads to missing authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.
Which versions are affected by CVE-2026-90504?
How do I fix CVE-2026-90504?
No fix has been published for CVE-2026-90504 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-90504 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90504 exists.
Sources
Also known as GHSA-5436-f3r8-9r98.