IRC command injection via unsanitized topic newlines
Published Feb 25, 2025 · Updated Feb 25, 2025
Command injection in Matrix.org matrix-appservice-irc before 3.0.4 allows remote authenticated users to execute IRC commands as themselves. BridgedClient.setTopic passed Matrix topic text containing carriage returns or newlines directly to the IRC client's send method, allowing injected IRC command delimiters. Exploitation requires permission to set a bridged room topic, and commands run only through the attacker's own puppeted IRC user.
Summary
What happened
Command injection in Matrix.org matrix-appservice-irc before 3.0.4 allows remote authenticated users to execute IRC commands as themselves. BridgedClient.setTopic passed Matrix topic text containing carriage returns or newlines directly to the IRC client's send method, allowing injected IRC command delimiters. Exploitation requires permission to set a bridged room topic, and commands run only through the attacker's own puppeted IRC user.
The record
- CVE
- CVE-2025-27146
- Published
- Feb 25, 2025
- Updated
- Feb 25, 2025
- Vendor
- Matrix.org
- Product
- matrix-appservice-irc
- Classifications
- CWE-77, CWE-88
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 25, 2025CVE publishedPublication date reported by the CVE source.
- Feb 25, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 3.0.4
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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