# Pac4j vulnerabilities

Source: https://junglewise.ai/threats/vendors/pac4j  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/pac4j.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in Pac4j: 0 in the last 7 days and 5 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-82465, was published on 29 August 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 5
- All time: 6 (1 critical, 0 exploited in the wild)

## About Pac4j

pac4j is an open-source security engine for Java-based web applications.

## Latest Pac4j vulnerabilities

- [CVE-2026-82465: pac4j-saml missing SAML LogoutRequest signature validation](https://junglewise.ai/threats/cve-2026-82465-pac4j-saml-missing-saml-logoutrequest-signature-validation) (medium, CVSS 5.3, published 29 Aug 2026)
- [CVE-2026-82464: pac4j-core open redirect in logout via backslash-prefixed URL](https://junglewise.ai/threats/cve-2026-82464-pac4j-core-open-redirect-in-logout-via-backslash-prefixed-url) (medium, CVSS 6.1, published 29 Aug 2026)
- [CVE-2026-82463: pac4j-core CheckProfileTypeAuthorizer authentication bypass](https://junglewise.ai/threats/cve-2026-82463-pac4j-core-checkprofiletypeauthorizer-authentication-bypass) (high, CVSS 8.1, published 29 Aug 2026)
- [CVE-2026-82462: pac4j pac4j-oidc authentication bypass](https://junglewise.ai/threats/cve-2026-82462-pac4j-pac4j-oidc-authentication-bypass) (medium, CVSS 6.5, published 29 Aug 2026)
- [CVE-2026-82461: pac4j pac4j-oidc access token validation bypass in Keycloak roles](https://junglewise.ai/threats/cve-2026-82461-pac4j-pac4j-oidc-access-token-validation-bypass-in-keycloak-roles) (high, CVSS 8.1, published 29 Aug 2026)
- [CVE-2026-29000: pac4j-jwt authentication bypass in JwtAuthenticator](https://junglewise.ai/threats/cve-2026-29000-pac4j-jwt-authentication-bypass-in-jwtauthenticator) (critical, CVSS 9.1, published 4 Mar 2026)

## Most severe Pac4j vulnerabilities

- [CVE-2026-29000: pac4j-jwt authentication bypass in JwtAuthenticator](https://junglewise.ai/threats/cve-2026-29000-pac4j-jwt-authentication-bypass-in-jwtauthenticator) (critical, CVSS 9.1, published 4 Mar 2026)
- [CVE-2026-82463: pac4j-core CheckProfileTypeAuthorizer authentication bypass](https://junglewise.ai/threats/cve-2026-82463-pac4j-core-checkprofiletypeauthorizer-authentication-bypass) (high, CVSS 8.1, published 29 Aug 2026)
- [CVE-2026-82461: pac4j pac4j-oidc access token validation bypass in Keycloak roles](https://junglewise.ai/threats/cve-2026-82461-pac4j-pac4j-oidc-access-token-validation-bypass-in-keycloak-roles) (high, CVSS 8.1, published 29 Aug 2026)
- [CVE-2026-82462: pac4j pac4j-oidc authentication bypass](https://junglewise.ai/threats/cve-2026-82462-pac4j-pac4j-oidc-authentication-bypass) (medium, CVSS 6.5, published 29 Aug 2026)
- [CVE-2026-82464: pac4j-core open redirect in logout via backslash-prefixed URL](https://junglewise.ai/threats/cve-2026-82464-pac4j-core-open-redirect-in-logout-via-backslash-prefixed-url) (medium, CVSS 6.1, published 29 Aug 2026)
- [CVE-2026-82465: pac4j-saml missing SAML LogoutRequest signature validation](https://junglewise.ai/threats/cve-2026-82465-pac4j-saml-missing-saml-logoutrequest-signature-validation) (medium, CVSS 5.3, published 29 Aug 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 5 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Pac4j vulnerabilities", https://junglewise.ai/threats/vendors/pac4j, 9 November 2026.