CVE-2026-67921 Cross-site request forgery in n/a

Critical 9.3 Published Updated

A CSRF vulnerability in Halo CMS allows remote attackers to execute arbitrary code via specific configuration components.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-67921?

CVE-2026-67921 is a critical vulnerability in n/a, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-Site Request Forgery (CSRF) vulnerability exists in Halo CMS versions up to 2.25.4 via the CorsConfigurer.java and the CsrfConfigurer.java components. This allows a remote attacker to execute arbitrary code.

Weakness: CWE-352

Which versions are affected by CVE-2026-67921?

How do I fix CVE-2026-67921?

No fix has been published for CVE-2026-67921 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-67921 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67921 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-5x82-gw26-c8r3.

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