CVE-2026-11832 Dancer2::Plugin::Auth::OAuth versions before 0.22 for Perl default to a predictable nonce

Critical 9.1 Published Updated

Predictable nonce generation in Dancer2 OAuth plugin allows attackers to bypass OAuth security checks.

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-2026-11832?

CVE-2026-11832 is a critical vulnerability in BIAFRA Dancer2::Plugin::Auth::OAuth, published on 15 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Dancer2::Plugin::Auth::OAuth versions before 0.22 for Perl default to a predictable nonce.

The default nonce was generated using an MD5 hash of the epoch time, which is predictable.

Weakness: CWE-338

Which versions are affected by CVE-2026-11832?

How do I fix CVE-2026-11832?

No fix has been published for CVE-2026-11832 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-11832 being exploited?

There is no known exploitation of CVE-2026-11832 in the wild and no public exploit code.

Sources

Also known as GHSA-h3g4-wmrw-rm63.

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