CVE-2026-25660 Authentication bypass for certain API calls

Critical 9.3 Published Updated

Attackers can bypass authentication to assign arbitrary permissions to any user in CodeChecker, leading to privilege escalation.

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-2026-25660?

CVE-2026-25660 is a critical authentication bypass vulnerability in Ericsson CodeChecker, published on 24 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. Authentication bypass occurs when the URL ends with Authentication with certain function calls.  This bypass allows assigning arbitrary permission to any user existing in CodeChecker.

This issue affects CodeChecker: through 6.27.3.

Weakness: CWE-863, CWE-290

Which versions are affected by CVE-2026-25660?

3 open source packages ship an affected version, including codechecker. It affects 1 product.

PackageAffectedFixed in
codechecker PyPIAll versions to 6.27.3None
codechecker PyPIAll versions to 6.27.3None
codechecker PyPIAll versions to 6.27.3None

Products include Ericsson Codechecker.

How do I fix CVE-2026-25660?

No fix has been published for CVE-2026-25660 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-25660 being exploited?

There is no known exploitation of CVE-2026-25660 in the wild and no public exploit code.

Sources

Also known as GHSA-4v9x-cqc5-j645, PYSEC-2026-317.

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