PT-2026-91262

A flaw was found in SSSD System Security Services Daemon. A local attacker with privileges to connect to the PAM Pluggable Authentication Modules responder socket can send a specially crafted protocol request. If the pam app services configuration is enabled and the service item is omitted from t...

PT-2026-91263

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services NSS responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affect...

PT-2026-91254

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service DoS by crashing...

Linux Distros Unpatched Vulnerability : CVE-2026-90996

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero- length body to the Network Security Services NSS...

CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

DEBIAN-CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

UBUNTU-CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

CVE-2026-87853 Sssd: sssd: idp authentication prefix comparison allows cross-user impersonation

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

CVE-2026-87853

SSSD (System Security Services Daemon) contains a flaw in its IdP authentication provider . The eval_access_token_buf() function compares the OIDC subject identifier using strncmp() with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attac...

EUVD-2026-75084

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

Linux Distros Unpatched Vulnerability : CVE-2026-87853

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticate...

PT-2026-89096

A flaw was found in SSSD's IdP authentication provider. The eval access token buf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.14.72 bug fix and security update

Red Hat OpenShift Container Platform release 4.14.72 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.14. Red Hat Product Security has rated this update as having a...

SUSE SLES12: libipa_hbac-devel / libipa_hbac0 / libsss_certmap0 / etc (SUSE-SU-2026:3797-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:3797-1 advisory. This update for sssd fixes the following issue: - CVE-2026-68743: insufficient validation in the PAM responder can lead to an out-of-bounds...

USN-8672-1: SSSD vulnerability

It was discovered that the SSSD PAM responder may crash if a physically proximate attacker manipulates a smartcard or Yubikey. Non-malicious physically proximate users may not be able to log in depending upon the details of their legitimate smartcard or Yubikey...

Astra Linux – Vulnerability in sssd

A flaw was discovered in the integration of Active Directory and the System Security Services Daemon SSSD on Linux systems. In default configurations, the Kerberos local authentication plugin sssdkrb5localauthplugin is enabled, but a fallback to the an2ln plugin is possible. This fallback allows ...

Astra Linux – Vulnerability in sudo

A flaw was discovered in sudo’s handling of ipahostname. In this process, the ipahostname value from /etc/sssd/sssd.conf was not propagated to sudo. As a result, this leads to a privilege management vulnerability in applications, where client hosts retain privileges even after those privileges ha...