Vulnerability in Red Hat Ansible Automation Platform 2.6 for RHEL 9

[ Description ]Official description

A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an attacker can illegitimately bind an arbitrary subkey to their own certificate and forge signatures, completely compromising cryptographic integrity.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund6 Oct 2026WID-SEC-2026-3790

  Red Hat Enterprise Linux (sequoia-openpgp, perl-DBI): Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-42784CVE-2026-88815

[ References ]References

• access.redhat.com/errata/RHSA-2026:34160vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:42078vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:42902vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:76733vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:76734vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:76735vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:76737vendor-advisoryx_refsource_REDHAT
• access.redhat.com/errata/RHSA-2026:79357vendor-advisoryx_refsource_REDHAT
• access.redhat.com/security/cve/CVE-2026-42784vdb-entryx_refsource_REDHAT
• bugzilla.redhat.com/show_bug.cgiissue-trackingx_refsource_REDHAT