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 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...

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...

kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership()

A flaw was found in the Linux kernel's iouring/poll component. A logic error exists in the iopollgetownership function due to an incorrect signed comparison. This flaw prevents the necessary slowpath from being triggered when the IOPOLLCANCELFLAG is set, potentially leading to unexpected behavior...

SUSE CVE-2026-55785

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the AUSF component performs cryptographic authentication comparisons in internal/sbi/processor/ueauthentication.go with ordinary equality helpers. Auth5gAkaComfirmRequestProcedure compares RES and XRES with...

CVE-2026-87853: Partial String Comparison

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...

PT-2026-88811

An issue was discovered in the mirage-crypto package before 2.2.0 for OCaml. The AES.GCM.authenticate decrypt into and Chacha20.authenticate decrypt into functions write the decrypted plaintext into a caller-provided buffer and only then compares the tag. On a forged tag, the functions returns...

CVE-2026-87876: Improper Handling of Case Sensitivity

Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler printer ACL validation and private-attribute filtering could allow bypass of username-based access controls in certain configurations...

Linux Distros Unpatched Vulnerability : CVE-2026-87876

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler printer ACL validation and private-attribu...

PT-2026-89100

Name of the Vulnerable Software and Affected Versions CUPS affected versions not specified Description Case-insensitive comparisons on request-derived usernames within the scheduler, specifically during printer ACL validation and private-attribute filtering, may allow the bypass of username-based...

Security Update for Microsoft Visual Studio Code (September 2026)

The remote host has an application installed that is missing security updates. It is, therefore, affected by multiple vulnerabilities: - Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-784...

CVE-2026-81376

Incomplete comparison with missing factors in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-81376

Incomplete comparison with missing factors in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-81376

CVE-2026-81376 affects Visual Studio Code and stems from an incomplete comparison with missing factors , allowing an unauthorized attacker to bypass a security feature over a network. The vulnerability is rated CVSS 9.6 (CRITICAL) with a changed scope, requiring user interaction but no prior auth...

EUVD-2026-73332

Incomplete comparison with missing factors in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-86723

AVideo through c3edcc274c389816d434acadac07ee78eaf330c1 contains an authentication bypass vulnerability in LoginControl::verifyChallenge that uses loose comparison == instead of strict comparison === against unset session values. Attackers with only a password can submit an empty request to...

CVE-2026-56101

OpenBSD before commit 1ee99df contains an inverted comparison vulnerability in the ieee80211michaelmicfailure function within sys/net80211/ieee80211cryptotkip.c that allows unauthenticated attackers within RF range to trigger denial of service by sending two malformed TKIP frames separated by mor...

CVE-2026-56101

OpenBSD before commit 1ee99df contains an inverted comparison in the ieee80211_michael_mic_failure() function within sys/net80211/ieee80211_crypto_tkip.c. The reversed TKIP MIC failure countermeasure window check allows unauthenticated attackers within RF range to send two malformed TKIP frames s...