CVE catalog
CVE-2026-3872
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wil
- Severity
- High · CVSS 7.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.44% · Oct 25, 2026
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | build_of_keycloak | Not reported | Not reported | unknown |
| Cpe | build_of_keycloak | Not reported | Not reported | unknown |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:6475]
- [https://access.redhat.com/errata/RHSA-2026:6476]
- [https://access.redhat.com/errata/RHSA-2026:6477]
- [https://access.redhat.com/errata/RHSA-2026:6478]
- [https://access.redhat.com/security/cve/CVE-2026-3872]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2445988]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-3872]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3872.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0977.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]