Matrix IRC Bridge allows IRC command injection to own puppeted user

CVE-2025-27146 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

The matrix-appservice-irc bridge up to version 3.0.3 contains a vulnerability which can lead to arbitrary IRC command execution as the puppeted user. The attacker can only inject commands executed as their own IRC user.

Patches

The vulnerability has been patched in matrix-appservice-irc version 3.0.4.

For more information

If you have any questions or comments about this advisory, please email us at security at matrix.org.

Basic information

Type
reviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-02-25 18:29:34 UTC
Updated
2025-02-25 21:46:09 UTC
GitHub reviewed
2025-02-25 18:29:34 UTC
NVD published
2025-02-25

EPSS Score

Score Percentile
0.75% 73.10%

CVSS Scores

Base score Version Severity Vector
2.7 3.1 —
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-5mvm-89c9-9gm5 ↗
CVE CVE-2025-27146 ↗

CWEs

CWE id Name
CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Credits

  • funderscore1 (reporter)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm matrix-appservice-irc < 3.0.4 3.0.4 —

References

cvelogic Threat Intelligence