{"id":"CVE-2026-54253","title":"TS3 Manager is modern web interface for maintaining Teamspeak3 servers","summary":"TS3 Manager is modern web interface for maintaining Teamspeak3 servers. Prior to 2.2.6, the /api/download handler in packages/server/routes/api.js passes the attacker-controlled port query parameter to socket.connect(port, host) and retu…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","cwe":["CWE-79"],"vendor":"joni1802","product":"ts3-manager","affected":["ts3-manager < 2.2.6"],"published":"2026-09-17","updated":"2026-09-23","sourceUpdated":"2026-09-23T20:17:10.987","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54253","references":[{"url":"https://github.com/joni1802/ts3-manager/commit/48df540786d2784c5d7b9bd55786d63e31288d07","label":"security-advisories@github.com"},{"url":"https://github.com/joni1802/ts3-manager/releases/tag/v2.2.6","label":"security-advisories@github.com"},{"url":"https://github.com/joni1802/ts3-manager/security/advisories/GHSA-3cgm-7p4g-gffj","label":"security-advisories@github.com"},{"url":"https://github.com/joni1802/ts3-manager/security/advisories/GHSA-3cgm-7p4g-gffj","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-23T19:43:53.927806Z"},"epss":0.00224,"epssPercentile":0.13292,"ingestedAt":"2026-09-17T19:26:25.316Z","slug":"CVE-2026-54253","body":"## Overview\n\nTS3 Manager is modern web interface for maintaining Teamspeak3 servers. Prior to 2.2.6, the /api/download handler in packages/server/routes/api.js passes the attacker-controlled port query parameter to socket.connect(port, host) and returns the resulting error.message through res.status(400).send(error.message) as text/html without a Content Security Policy. When a logged-in operator follows a crafted top-level link, the reflected value executes in the manager origin. The token cookie set in packages/ui/src/store/modules/query.js lacks HttpOnly, Secure, and an explicit SameSite attribute, allowing the script to read the token and call the autofillform event in packages/server/socket.js. autofillform returns the decoded JWT, including the cleartext ServerQuery password, enabling operator-session hijacking and control of the managed TeamSpeak server when the operator uses administrative ServerQuery credentials. A valid operator session and user interaction are required. This issue is fixed in 2.2.6.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":209872,"id":"CVE-2026-54253","ts":1790195567439,"field":"exploit_available","old":"false","new":"true"}]}