{"id":"CVE-2023-38690","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-38690","generatedAt":"2026-10-28T04:33:05.778Z","title":"One may disable dynamic channels in the config to disable the most common execution method but others may exist.","description":"matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, it is possible to craft a command with newlines which would not be properly parsed. This would mean you could pass a string of commands as a channel name, which would then be run by the IRC bridge bot. Versions 1.0.1 and above are patched. There are no robust workarounds to the bug. One may disable dynamic channels in the config to disable the most common execution method but others may exist.","published":"2023-08-04T17:15:11.000Z","lastModified":"2026-06-17T06:10:58.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-20","CWE-77"],"affected":["matrix/matrix irc bridge"],"epss":{"score":0.00863,"percentile":0.58417,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.86%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/matrix-org/matrix-appservice-irc/commit/0afb064635d37e039067b5b3d6423448b93026d3","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-3pmj-jqqp-2mj3","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/matrix-org/matrix-appservice-irc/commit/0afb064635d37e039067b5b3d6423448b93026d3","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1","tags":["Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-3pmj-jqqp-2mj3","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-38690","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}