Vulnerability · Published Aug 29, 2026 · Assigned by VulnCheck
CVE-2026-82463pac4j-core before 6.5.6 Authorization Bypass via Reversed Profile Type Check
High 8.1
In plain English
A high-severity incorrect authorization in pac4j from pac4j. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 53.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- Patch Commit patch
- pac4j Security Advisory for pac4j-core, pac4j-oidc and pac4j-saml vendor-advisory
- https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/authorization/authorizer/CheckProfileTypeAuthorizer.java technical-description
- https://github.com/pac4j/pac4j product
- VulnCheck Advisory: pac4j-core before 6.5.6 Authorization Bypass via Reversed Profile Type Check third-party-advisory