CVE-2026-82463 pac4j-core before 6.5.6 Authorization Bypass via Reversed Profile Type Check
Attackers can bypass authorization checks in pac4j-core by exploiting reversed profile type validation logic to access restricted resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82463?
CVE-2026-82463 is a high-severity authentication bypass vulnerability in pac4j, published on 29 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
pac4j-core before 6.5.6 contains an authentication bypass vulnerability in CheckProfileTypeAuthorizer that reverses the profile type validation logic. Attackers can authenticate through a weaker client and access resources requiring a stronger profile type by satisfying generic profile checks.
Weakness: CWE-863
Which versions are affected by CVE-2026-82463?
How do I fix CVE-2026-82463?
No fix has been published for CVE-2026-82463 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-2026-82463 being exploited?
There is no known exploitation of CVE-2026-82463 in the wild and no public exploit code.
Sources
Also known as GHSA-f66h-84rm-53q7.