GHSA-2V3W-6G35-5F9V Mattermost fails to properly validate User-Agent header tokens

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586...

CVE-2026-25783

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586...

CVE-2026-25783 Denial of service via malformed User-Agent header in getBrowserVersion

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586...

CVE-2026-25783

CVE-2026-25783 affects Mattermost versions 11.3.x up to 11.3.0, 11.2.x up to 11.2.2, and 10.11.x up to 10.11.10. An authenticated attacker can trigger a request panic by sending specially crafted User-Agent header, due to improper validation of User-Agent header tokens. The CVSS score is 4.3 (Med...

CVE-2026-25783

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586...

Mattermost 安全漏洞

Mattermost is an open-source collaboration platform developed by the American company Mattermost. Versions of Mattermost such as 11.3.0 and earlier 11.3.x series, 11.2.2 and earlier 11.2.x series, as well as 10.11.10 and earlier 10.11.x series, have security vulnerabilities. These vulnerabilities...

VulnCheck KEV: CVE-2025-62593

Ray is an AI compute engine. Prior to version 2.52.0, developers working with Ray as a development tool can be exploited via a critical RCE vulnerability exploitable via Firefox and Safari. This vulnerability is due to an insufficient guard against browser-based attacks, as the current defense us...

CVE-2021-47900

Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent header with shellexec to run system commands by sending craft...

CVE-2021-47900 Gila CMS < 2.0.0 - Remote Code Execution

Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent header with shellexec to run system commands by sending craft...

EUVD-2021-34749

Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent header with shellexec to run system commands by sending craft...

CVE-2021-47900

Gila CMS

CVE-2021-47900 Gila CMS < 2.0.0 - Remote Code Execution

Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent header with shellexec to run system commands by sending craft...

PT-2026-4931

Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent header with shell exec to run system commands by sending...

CVE-2021-31794

Settings.aspx?view=About in Directum 5.8.2 allows XSS via the HTTP User-Agent header...

CVE-2016-10964

The dwnldr plugin before 1.01 for WordPress has XSS via the User-Agent HTTP header...

CVE-2020-12645

OX App Suite 7.10.1 to 7.10.3 has improper input validation for rate limits with a crafted User-Agent header, spoofed vacation notices, and /apps/load memory consumption...

CVE-2019-16197

In htdocs/societe/card.php in Dolibarr 10.0.1, the value of the User-Agent HTTP header is copied into the HTML document as plain text between tags, leading to XSS...

CVE-2019-12198

In GoHttp through 2017-07-25, there is a stack-based buffer over-read via a long User-Agent header...

CVE-2021-47738

CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend...

CVE-2021-47738

CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend...