CVE-2026-44947 Stale PSA ClusterRoleBinding Persists After RoleTemplate Downgrade in Rancher

A missing clean-up in the legacy Project Role Template Binding PRTB reconciler in Rancher versions 2.13.0 up to 2.13.7 and 2.14.0 up to 2.14.3 allowed users to retain unauthorized Pod Security Admission PSA permissions after an administrator removes those permissions from a RoleTemplate...

PostgresSQL JDBC -- Silent channel-binding authentication downgrade via unsupported certificate algorithms

PostgreSQL project reports: channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to guarantee. An attacker who can intercept the TLS connection...

FreeBSD : PostgresSQL JDBC -- Silent channel-binding authentication downgrade via unsupported certificate algorithms (7701f760-745c-11f1-bc50-6cc21735f730)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 7701f760-745c-11f1-bc50-6cc21735f730 advisory. PostgreSQL project reports: channelBinding=require connections can be silently downgraded from...

undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching

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GO-2026-5276 Vikunja: Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade in code.vikunja.io/api

Vikunja: Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing...

CVE-2026-55568 Guzzle: Silent HTTPS-Proxy Downgrade to Cleartext

Guzzle is an extensible PHP HTTP client. Prior to 7.12.1, in certain configurations, traffic expected to be protected by TLS on the hop to the proxy is transmitted in cleartext. Proxy authentication credentials the Proxy-Authorization header, proxy userinfo in the proxy URL, or CURLOPTPROXYUSERPW...

CVE-2026-8823

Mattermost versions 11.7.x = 11.7.0, 10.11.x = 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669...

Linux Distros Unpatched Vulnerability : CVE-2026-11525

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Impact: When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the...

Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

Overview CoreWCF.Primitives is a port of the service side of Windows Communication Foundation WCF to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core. Affected versions of this package are vulnerable to Selection of Less-Secure Algorithm During Negotiati...

NPM: undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching

NPM: undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching vulnerability discovered by ? in WordPress Npm undici versions 6.27.0...

GHSA-G8M3-5G58-FQ7M undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching

Impact When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens: -...

guzzlehttp/guzzle: Silent HTTPS-Proxy Downgrade to Cleartext

Impact The built-in cURL handlers GuzzleHttp\Handler\CurlHandler and GuzzleHttp\Handler\CurlMultiHandler, used by default whenever the PHP cURL extension is available accept an https:// proxy — a proxy reached over a TLS-encrypted connection — through the proxy request option, client-level proxy...

SUSE CVE-2026-11525

Impact: When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example,...

Silent HTTPS proxy downgrade to cleartext

Impact The built-in cURL handlers GuzzleHttp\Handler\CurlHandler and GuzzleHttp\Handler\CurlMultiHandler, used by default whenever the PHP cURL extension is available accept an https:// proxy — a proxy reached over a TLS-encrypted connection — through the proxy request option, client-level proxy...

ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Components

Summary A Server-Side Request Forgery SSRF vulnerability was discovered in Zitadel affecting: HTTP Notification Channels: Used as an alternative to SMTP/Twilio configurations, sending payloads to user-defined URLs via HTTP POST webhooks. OIDC BackChannel Logout: Terminates sessions across differe...

CVE-2026-6734

A flaw was found in undici. When using Socks5ProxyAgent, undici incorrectly reuses a single connection pool across different origins. This can lead to cross-origin request routing, where sensitive credentials and data intended for one destination are sent to another. Consequently, responses from...

CVE-2026-11525

A flaw was found in undici. When undici processes Set-Cookie headers, it incorrectly interprets the SameSite attribute, accepting partial matches instead of exact ones. This allows a malicious server to downgrade a cookie's SameSite policy to a less secure setting, potentially leading to unintend...

Origin Validation Error

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Origin Validation Error in the Socks5ProxyAgent. An attacker can intercept or redirect sensitive data, including credentials and request payloads, to unintended origins b...

AZL-91194 CVE-2026-11525 affecting package nodejs for versions less than 24.18.1-1

Impact: When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example,...

CVE-2026-11525 undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching

Impact: When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example,...