matrix-appservice-irc is a Node.js IRC bridge for Matrix. 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. The vulnerability has been patched in matrix-appservice-irc version 3.0.4.
CVE-2025-27146
This low-severity CVE scores 2.7 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 27% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 2.7
- EG Score
- 2.7(medium)
- EG Risk
- —
- EPSS
- 27.9%
- KEV
- Not listed
Published
February 25, 2025
Last Modified
March 4, 2025
References (2)
- security-advisories@githubhttps://github.com/matrix-org/matrix-appservice-irc/commit/74f02c8e11f16ed1b355700092c1aa9c036a11bd
- security-advisories@githubhttps://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-5mvm-89c9-9gm5
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| matrix-appservice-irc | — | 3.0.4 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 48× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:07 UTCEPSS rescore
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- 2026-07-07 13:45 UTCEPSS rescore
- 2026-07-07 10:21 UTCOSV refresh
- 2026-07-06 16:27 UTCEPSS rescore
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- 2026-06-30 23:22 UTCEPSS rescore
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- 2026-06-21 01:59 UTCEPSS rescore
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- 2026-06-19 19:25 UTCEPSS rescore
- 2026-06-19 19:25 UTCEPSS rescore
- 2026-06-18 21:13 UTCOSV refresh
- 2026-06-18 17:52 UTCEPSS rescore
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- 2026-06-11 13:59 UTCEPSS rescore
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- 2026-06-08 14:16 UTCEPSS rescore
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- 2026-06-07 15:24 UTCEPSS rescore
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- 2026-06-06 13:47 UTCEPSS rescore
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- 2026-06-05 22:46 UTCEPSS rescore
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- 2026-06-04 13:11 UTCEPSS rescore
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- 2026-05-31 22:30 UTCEPSS rescore
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- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-30 11:15 UTCEG score recompute
- 2026-05-30 09:01 UTCOSV refresh
- 2026-05-29 13:44 UTCEPSS rescore
Related CVEs(same CWE)
Same CWE
10 shownCWE-77
- CVE-2016-15057EG 9.9CRITICAL
- CVE-2014-5470EG 9.8EPSS 95%CRITICAL
- CVE-2013-2513EG 9.8CRITICAL
- CVE-2015-20108EG 9.8CRITICAL
- CVE-2015-10096NVD 5.0EG 9.8MEDIUM
- CVE-2016-20017EG 9.8 KEVEPSS 99%CRITICAL
- CVE-2016-4991EG 9.8CRITICAL
- CVE-2015-20107NVD 7.6EG 9.8EPSS 94%HIGH
- CVE-2014-4982EG 9.8EPSS 91%CRITICAL
- CVE-2016-10760EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2025-27146?
When was CVE-2025-27146 disclosed?
Is CVE-2025-27146 actively exploited?
What is the CVSS score of CVE-2025-27146?
How do I remediate CVE-2025-27146?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-27146
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