CVE-2026-66885

Cross-Site Request Forgery CSRF vulnerability in livebook-dev livebook allows an attacker to authenticate a victim's browser session under the attacker's own Livebook Teams identity. When Livebook is configured to use Livebook Teams for identity, Livebook.ZTA.LivebookTeams.handlerequest/4 in...

CVE-2026-66885 Livebook Teams identity callback lacks state binding, allowing login CSRF

Cross-Site Request Forgery CSRF vulnerability in livebook-dev livebook allows an attacker to authenticate a victim's browser session under the attacker's own Livebook Teams identity. When Livebook is configured to use Livebook Teams for identity, Livebook.ZTA.LivebookTeams.handlerequest/4 in...

CVE-2026-66884

The CVE-2026-66884 affects oidcc_plug (Oidcc.Plug.AuthorizationCallback.call/2) in Erlang Ecosystem Foundation. A callback with no Oidcc.Plug.Authorize session is processed with security checks disabled, causing nonce, state, PKCE, IP and user-agent checks to be skipped and permitting state-less ...

PT-2026-55719

Name of the Vulnerable Software and Affected Versions Dancer2::Plugin::Auth::OAuth::Provider versions prior to 0.23 Description The software fails to support the OAuth 2.0 state parameter. The authentication url method creates a provider authorization redirect without a state value, and the...

TencentOS Server 3: nghttp2 (TSSA-2026:0385)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0385 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

EUVD-2026-23676

The Keycloak authentication manager in apache-airflow-providers-keycloak did not generate or validate the OAuth 2.0 state parameter on the login / login-callback flow, and did not use PKCE. An attacker with a Keycloak account in the same realm could deliver a crafted callback URL to a victim's...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : nghttp2 (SUSE-SU-2026:1350-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1350-1 advisory. This update for nghttp2 fixes the following issue: - CVE-2026-27135: assertion failure due to missing sta...

nghttp2 security update

1.43.0-6.1 - fix Denial of service: Assertion failure due to the missing state validation CVE-2026-27135...

Oracle Linux 10 : nghttp2 (ELSA-2026-7666)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-7666 advisory. 1.64.0-2.1 - fix Denial of service: Assertion failure due to the missing state validation CVE-2026-27135 Tenable has extracted the preceding description block...

nghttp2 security update

1.64.0-2.1 - fix Denial of service: Assertion failure due to the missing state validation CVE-2026-27135...

SUSE SLES15 Security Update : nghttp2 (SUSE-SU-2026:1247-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1247-1 advisory. This update for nghttp2 fixes the following issue: - CVE-2026-27135: assertion failure due to missing state validation can lead to DoS...

SUSE-SU-2026:1074-1 Security update for nghttp2

This update for nghttp2 fixes the following issues: - CVE-2026-27135: Assertion failure due to missing state validation can lead to DoS bsc1259845...

SUSE-SU-2026:20833-1 Security update for nghttp2

This update for nghttp2 fixes the following issue: - CVE-2026-27135: assertion failure due to missing state validation can lead to DoS bsc1259845...

nghttp2 Denial of service: Assertion failure due to the missing state validation

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CVE-2026-27135 nghttp2 Denial of service: Assertion failure due to the missing state validation

nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API nghttp2sessionterminatesession or nghttp2sessionterminatesession2 is called by the application. They might be...

Cross-site Request Forgery (CSRF)

fastapi-sso is vulnerable to Cross-Site Request Forgery CSRF. The vulnerability is due to missing persistence and verification of the OAuth state parameter, which allows an attacker to supply a malicious callback URL and link their account to a victim’s session...

CVE-2026-25221

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221 PolarLearn has Multiple Login CSRFs via Missing OAuth state Parameter (GitHub & Google)

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

CVE-2026-25221

CVE-2026-25221 (PolarLearn) affects PolarLearn prior to 0-PRERELEASE-15. The OAuth 2.0 login flow for GitHub and Google providers fails to implement/verify the state parameter, enabling a Login CSRF attack. An attacker can pre-authenticate a session and lure a victim into logging into the attacke...

CVE-2025-66629

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.4, some of HedgeDoc's OAuth2 endpoints for social login providers such as Google, GitHub, GitLab, Facebook or Dropbox lack CSRF protection, since they don't send a state parameter and verify the respon...