CVE-2021-3639

A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker to facilitate phishing attacks by tricking users into visiting a trusted web application URL that redirects to an external and potentially malicious server. The highest threat from this liability is to confidentiality and integrity.

• CWE-601
• CWE-601

• https://access.redhat.com/security/cve/CVE-2021-3639Patch, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1980648Issue Tracking, Third Party Advisory
• https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5Patch, Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2021-3639Patch, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1980648Issue Tracking, Third Party Advisory
• https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5Patch, Third Party Advisory

Published

Aug 22, 2022

Last Modified

Jun 17, 2026

Status

Modified

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