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CVE-2022-29166
Improper handling of multiline messages in matrix-appservice-irc
High8.0EPSS 1.0%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
matrix-appservice-irc is a Node.js IRC bridge for Matrix. The vulnerability in node-irc allows an attacker to manipulate a Matrix user into executing IRC commands by having them reply to a maliciously crafted message. The vulnerability has been patched in matrix-appservice-irc 0.33.2. Refrain from replying to messages from untrusted participants in IRC-bridged Matrix rooms. There are no known workarounds for this issue.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.0% · top 37% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.0.
Weakness
Affected products
matrix-org · matrix-appservice-irc
- affected < 0.34.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmmatrix-appservice-ircGHSA-37hr-348p-rmf4 (opens in a new tab)
References (2)
- https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-37hr-348p-rmf4 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://matrix.org/blog/2022/05/04/0-34-0-security-release-for-matrix-appservice-irc-high-severity (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-37hr-348p-rmf4 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-29166)Record last updated .