CVE-2026-91134 Discourse: Block post iframes whose encoded userinfo bypasses the allowed_iframes allowlist

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the Discourse post sanitizer allowed a stored cross-origin iframe to bypass the allowediframes prefix policy when the iframe src contained encoded userinfo. The sanitizer validated a decoded form...

CVE-2026-91134

The open-source discussion platform Discourse contains a vulnerability in its post sanitizer prior to versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0 . The root cause is a logic flaw where the sanitizer validates a decoded form of an iframe src differently than how the browser interprets it. ...

EUVD-2026-86298

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the Discourse post sanitizer allowed a stored cross-origin iframe to bypass the allowediframes prefix policy when the iframe src contained encoded userinfo. The sanitizer validated a decoded form...

Astra Linux – Vulnerability in Chromium

An observable discrepancy in the Network component of Google Chrome prior to version 153.0.8010.36 allowed a remote attacker to obtain cross-origin data through a crafted HTML page. Chromium security severity: Medium...

Astra Linux – Vulnerability in Chromium

Information leaks in Extensions in Google Chrome prior to version 152.0.7977.65 allowed a remote attacker to leverage social engineering to obtain cross-origin data through a crafted Chrome Extension. Chromium security severity: Medium...

Astra Linux – Vulnerability in Chromium

Uninitialized use in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data through a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Chromium

The information leak in Skia in Google Chrome prior to 152.0.7977.75 allowed a remote attacker who had compromised the renderer process to leak cross-origin data through a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Chromium

Inappropriate implementation of favicon handling in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data through a crafted HTML page. Chromium security severity: Medium...

USN-8811-1 python-urllib3 vulnerability

It was discovered that urllib3 did not correctly strip sensitive HTTP headers during cross-origin redirects. An attacker could possibly use this issue to leak sensitive information...

USN-8811-1: urllib3 vulnerability

It was discovered that urllib3 did not correctly strip sensitive HTTP headers during cross-origin redirects. An attacker could possibly use this issue to leak sensitive information...

PT-2026-98154

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.1.8 Discourse versions prior to 2026.6.3 Discourse versions prior to 2026.7.2 Discourse versions prior to 2026.8.0 Description The post sanitizer allows a stored cross-origin iframe to bypass the allowed iframe...

CVE-2026-91134: Improper Input Validation

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the Discourse post sanitizer allowed a stored cross-origin iframe to bypass the allowediframes prefix policy when the iframe src contained encoded userinfo. The sanitizer validated a decoded form...

Ubuntu 20.04 LTS : urllib3 vulnerability (USN-8811-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8811-1 advisory. It was discovered that urllib3 did not correctly strip sensitive HTTP headers during cross-origin redirects. An attacker could possibly use this issue to leak...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: git-lfs (UTSA-2026-124498)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-124498 advisory. Proxy-Authorization and Proxy-Authenticate headers persisted on cross-origin redirects potentially leaking sensitive information. Tenable has extracted the preceding...

SUSE CVE-2026-95296

Missing authorization in Core in Google Chrome on on Mac prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to obtain cross-origin data via a crafted HTML page. Chromium security severity: Low...

SUSE CVE-2026-95302

Incorrect authorization in WebAPKs in Google Chrome on on Android prior to 154.0.8037.57 allowed a local attacker to obtain cross-origin data via a co-installed app. Chromium security severity: Medium...

SUSE CVE-2026-95312

Information leak in Passwords in Google Chrome prior to 154.0.8037.57 allowed a remote attacker who had compromised the renderer process to obtain cross-origin data via a crafted HTML page. Chromium security severity: Medium...

SUSE CVE-2026-95317

Incorrect authorization in MediaCapture in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to obtain cross-origin data via a crafted Chrome extension. Chromium security severity: Medium...

SUSE CVE-2026-95368

Incorrect authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to potentially obtain cross-origin data via a crafted HTML page. Chromium security severity: Low...

php: php: Credential disclosure via cross-origin HTTP redirects

A flaw was found in PHP. When following a redirect, the built-in HTTP Hypertext Transfer Protocol stream wrapper forwards sensitive request headers—such as authentication tokens and session cookies—unchanged, even when directed to a different host, port, or unencrypted connection. A malicious...