{"cve":"CVE-2024-32000","nvd":{"published":"2024-04-12T20:15:53.250","modified":"2026-06-17T07:29:05.903","status":"Deferred","description":"matrix-appservice-irc is a Node.js IRC bridge for the Matrix messaging protocol. matrix-appservice-irc before version 2.0.0 can be exploited to leak the truncated body of a message if a malicious user sends a Matrix reply to an event ID they don't have access to. As a precondition to the attack, the malicious user needs to know the event ID of the message they want to leak, as well as to be joined to both the Matrix room and the IRC channel it is bridged to. The message reply containing the leaked message content is visible to IRC channel members when this happens. matrix-appservice-irc 2.0.0 checks whether the user has permission to view an event before constructing a reply. Administrators should upgrade to this version. It's possible to limit the amount of information leaked by setting a reply template that doesn't contain the original message. See these lines `601-604` in the configuration file linked.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-280","CWE-755"],"references":["https://github.com/matrix-org/matrix-appservice-irc/blob/d5d67d1d3ea3f0f6962a0af2cc57b56af3ad2129/config.sample.yaml#L601-L604","https://github.com/matrix-org/matrix-appservice-irc/pull/1799","https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-wm4w-7h2q-3pf7","https://github.com/matrix-org/matrix-appservice-irc/blob/d5d67d1d3ea3f0f6962a0af2cc57b56af3ad2129/config.sample.yaml#L601-L604","https://github.com/matrix-org/matrix-appservice-irc/pull/1799"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:48:32.179249784+00:00"},"epss":{"cve":"CVE-2024-32000","score":0.00454,"percentile":0.39397,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-wm4w-7h2q-3pf7","url":"https://osv.dev/vulnerability/GHSA-wm4w-7h2q-3pf7","summary":"Matrix IRC Bridge truncated content of messages can be leaked","modified":"2026-09-10T03:50:00.260867978Z","packages":[{"ecosystem":"npm","name":"matrix-appservice-irc","purl":"pkg:npm/matrix-appservice-irc","ranges":["<2.0.0"],"fixed":["2.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}