---
cve: "CVE-2026-82464"
severity: "MEDIUM"
cvss: 5.3
epss: "20%"
vendor: "pac4j"
kev: false
exploited: false
published: "2026-08-29 17:17:58"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T05:51:30+02:00"
---

# CVE-2026-82464

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

pac4j-core before 6.5.6 contains an open redirect vulnerability in DefaultLogoutLogic.perform() that accepts backslash-prefixed logout redirect targets matching logoutUrlPattern. Attackers can craft logout links with backslash-prefixed external hosts that browsers normalize into network-path references, redirecting victims to attacker-controlled sites after logout.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 0ce4586f0526cb94d1e2bb6623c416db9b4dc2a3 (Commit)

## Referenzen

- <https://github.com/pac4j/pac4j/commit/2270c3ff70e93cc43831e75702acd5135531237e>
- <https://www.pac4j.org/blog/security-advisory-pac4j-core-oidc-saml.html>
- <https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/engine/DefaultLogoutLogic.java>
- <https://github.com/pac4j/pac4j>
- <https://www.vulncheck.com/advisories/pac4j-core-before-6.5.6-open-redirect-via-backslash-logout>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-82464) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_