Distribution affected by pull-through cache credential exfiltration via www-authenticate bearer realm

hi guys, commit: 40594bd98e6d6ed993b5c6021c93fdf96d2e5851 as-of 2026-01-31 contact: GitHub Security Advisory https://github.com/distribution/distribution/security/advisories/new summary in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the process that parses WWW-Authenticate challenges from an upstream registry. An attacker can obtain upstream credentials by manipulating the bearer realm URL to redirect authentication requests to a...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the process that parses WWW-Authenticate challenges from an upstream registry. An attacker can obtain upstream credentials by manipulating the bearer realm URL to redirect authentication requests to a...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the process that parses WWW-Authenticate challenges from an upstream registry. An attacker can obtain upstream credentials by manipulating the bearer realm URL to redirect authentication requests to a...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the process that parses WWW-Authenticate challenges from an upstream registry. An attacker can obtain upstream credentials by manipulating the bearer realm URL to redirect authentication requests to a...

CVE-2026-33540

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

DEBIAN-CVE-2026-33540

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

UBUNTU-CVE-2026-33540

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

CVE-2026-33540

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

CVE-2026-33540 Distribution affected by pull-through cache credential exfiltration via www-authenticate bearer realm

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

CVE-2026-33540

CVE-2026-33540 affects the Distribution toolkit. In prior releases (before 3.1.0) and in pull-through cache mode, it parses WWW-Authenticate challenges to discover token auth endpoints, taking the realm URL from a bearer challenge without validating it against the upstream host. An attacker-contr...

CVE-2026-33540 Distribution affected by pull-through cache credential exfiltration via www-authenticate bearer realm

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

CVE-2026-33540

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

CVE-2026-33540 Distribution affected by pull-through cache credential exfiltration via www-authenticate bearer realm

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used...

PT-2026-30630

Distribution versions prior to 3.1.0 are affected by an issue where the software incorrectly handles token authentication endpoints. Specifically, when operating in pull-through cache mode, the software parses WWW-Authenticate challenges from the upstream registry without validating the realm URL...

CVE-2026-33990

Docker Model Runner DMR is software used to manage, run, and deploy AI models using Docker. Prior to version 1.1.25, Docker Model Runner contains an SSRF vulnerability in its OCI registry token exchange flow. When pulling a model, Model Runner follows the realm URL from the registry's...

keycloak: org.keycloak/keycloak-services: Keycloak: Privilege escalation via manage-clients permission

A flaw was found in Keycloak. An administrator with manage-clients permission can exploit a misconfiguration where this permission is equivalent to manage-permissions. This allows the administrator to escalate privileges and gain control over roles, users, or other administrative functions within...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.11 Update

New Red Hat build of Keycloak 26.4.11 packages are available from the Customer Portal Red Hat build of Keycloak 26.4.11 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security...

CVE-2026-33990

Docker Model Runner DMR is software used to manage, run, and deploy AI models using Docker. Prior to version 1.1.25, Docker Model Runner contains an SSRF vulnerability in its OCI registry token exchange flow. When pulling a model, Model Runner follows the realm URL from the registry's...

EUVD-2026-17963

Docker Model Runner DMR is software used to manage, run, and deploy AI models using Docker. Prior to version 1.1.25, Docker Model Runner contains an SSRF vulnerability in its OCI registry token exchange flow. When pulling a model, Model Runner follows the realm URL from the registry's...