PT-2026-39313

🔴 Docker Registry Auth Substring Match Forwards Credentials to a Different Registry CVE-2025-27119, High https://t.co/gO08whMpWZ...

EUVD-2026-24151

Tekton Pipelines has VerificationPolicy regex pattern bypass via substring matching...

Tekton Pipelines has VerificationPolicy regex pattern bypass via substring matching

hey guys, triage contract this is a first-screen summary; deterministic proof is in the proof bundle canonical.log/control.log/witness.txt. summary trusted resources verification policies match a resource source string refSource.URI against spec.resources.pattern using regexp.MatchString. in go,...

GHSA-RMX9-2PP3-XHCR Tekton Pipelines has VerificationPolicy regex pattern bypass via substring matching

hey guys, triage contract this is a first-screen summary; deterministic proof is in the proof bundle canonical.log/control.log/witness.txt. summary trusted resources verification policies match a resource source string refSource.URI against spec.resources.pattern using regexp.MatchString. in go,...

CVE-2026-25542

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.43.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, trusted resources verification policies match a resource source string refSource.URI against spec.resources.pattern...

CVE-2026-25542 Tekton Pipelines: VerificationPolicy regex pattern bypass via substring matching

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.43.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, trusted resources verification policies match a resource source string refSource.URI against spec.resources.pattern...

CVE-2026-25542 Tekton Pipelines: VerificationPolicy regex pattern bypass via substring matching

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.43.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, trusted resources verification policies match a resource source string refSource.URI against spec.resources.pattern...

CVE-2026-25542

Tekton Pipelines CVE-2026-25542 affects versions 0.43.0–1.11.0. The vulnerability arises because trusted resources verification policies compare refSource.URI against spec.resources[].pattern using Go’s regexp.MatchString, which reports a match if the pattern appears anywhere in the string. Unanc...

CVE-2026-25542 Tekton Pipelines: VerificationPolicy regex pattern bypass via substring matching

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.43.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, trusted resources verification policies match a resource source string refSource.URI against spec.resources.pattern...

[SECURITY] [DLA 4524-2] postgresql-13 regression update

Debian LTS Advisory DLA-4524-2 [email protected] https://www.debian.org/lts/security/ Jochen Sprickerhof April 17, 2026 https://wiki.debian.org/LTS Package : postgresql-13 Version : 13.23-0+deb11u3 The fix for CVE-2026-2006 introduced a regression in SUBSTRING for toasted multibyte...

JLSEC-2026-60

The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a heap-buffer-overflow read vulnerability exists in the PCRE2 regular expression matching engine, specifically within the handling of the scs:... Scan SubString verb when combined with...

CVE-2026-27656

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...

Incorrect Implementation of Authentication Algorithm

Overview github.com/mattermost/mattermost-server is an open source Slack-alternative in Golang and React. Affected versions of this package are vulnerable to Incorrect Implementation of Authentication Algorithm in the IsSameUser function. An attacker can gain unauthorized access to arbitrary user...

GHSA-FG35-5RF6-QG3G Mattermost allows attackers to take over arbitrary user accounts via overly permissive substring matching flaw

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...

CVE-2026-27656

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...

CVE-2026-27656 Account Takeover via Substring Matching in OpenID Connect Authentication

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...

CVE-2026-27656 Account Takeover via Substring Matching in OpenID Connect Authentication

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...

CVE-2026-27656

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...

CVE-2026-27656

Mattermost contains a vulnerability (CVE-2026-27656) where versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, and 10.11.x

CVE-2026-27656 Account Takeover via Substring Matching in OpenID Connect Authentication

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to properly validate user identity in the OpenID IsSameUser comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring matching flaw in the user...