CVE-2026-39944

Ceph is an open-source distributed storage platform providing object, block, and file storage. In versions prior to 20.2.4 and 19.2.6, the RADOS Gateway RGW protects STS session tokens with an AES-128-CBC handler that provides no message authentication, allowing an attacker who holds any valid ST...

CVE-2026-39944

CVE-2026-39944 affects the Ceph RADOS Gateway (RGW) , where STS session tokens are protected by an AES-128-CBC handler that provides no message authentication. An attacker holding any valid STS token can perform a CBC bit-flip on the acct_type, perm_type, and is_admin fields to forge an is_admin ...

CVE-2026-39944

Ceph is an open-source distributed storage platform providing object, block, and file storage. In versions prior to 20.2.4 and 19.2.6, the RADOS Gateway RGW protects STS session tokens with an AES-128-CBC handler that provides no message authentication, allowing an attacker who holds any valid ST...

CVE-2026-39944 Ceph: CephX AES Authentication error

Ceph is an open-source distributed storage platform providing object, block, and file storage. In versions prior to 20.2.4 and 19.2.6, the RADOS Gateway RGW protects STS session tokens with an AES-128-CBC handler that provides no message authentication, allowing an attacker who holds any valid ST...

CVE-2026-39944 Ceph: CephX AES Authentication error

Ceph is an open-source distributed storage platform providing object, block, and file storage. In versions prior to 20.2.4 and 19.2.6, the RADOS Gateway RGW protects STS session tokens with an AES-128-CBC handler that provides no message authentication, allowing an attacker who holds any valid ST...

PT-2026-82765

Name of the Vulnerable Software and Affected Versions Ceph versions prior to 20.2.4 Ceph versions prior to 19.2.6 Description The RADOS Gateway RGW uses an AES-128-CBC handler to protect STS session tokens that lacks message authentication. This allows an attacker with a valid STS token to perfor...