An issue was discovered in InspIRCd 3 before 3.1.0.
Priority LOW 32CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
An issue was discovered in InspIRCd 3 before 3.1.0. The silence module contains a use after free vulnerability. This vulnerability can be used for remote crashing of an InspIRCd server by any user able to fully connect to a server.
Why it matters now
EPSS 0.01488 74th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20918
- 2026-10-03 Alias added: GHSA-3c6j-x3h2-c2j2
References
More Inspircd vulnerabilities
- TI-2015-05592 Buffer underflow vulnerability in the Debian inspircd package before 2.0.5-1+deb7u1 for… CVSS 3.0CRITICAL 9.8
- TI-2012-05398 inspircd in Debian before 2.0.7 does not properly handle unsigned integers. CVSS 3.0CRITICAL 9.8
- TI-2015-07153 The DNS::GetResult function in dns.cpp in InspIRCd before 2.0.19 allows remote DNS… CVSS 3.0HIGH 8.6
- TI-2012-01620 Heap-based buffer overflow in dns.cpp in InspIRCd 2.0.5 might allow remote attackers to… CVSS 2.0HIGH 7.5
- TI-2020-15503 An issue was discovered in InspIRCd 2 before 2.0.29 and 3 before 3.6.0. CVSS 3.1MEDIUM 6.5
- TI-2019-15131 An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. CVSS 3.1MEDIUM 6.5
Sources
- CVE-2019-20918 · CVE Program
- CVE-2019-20918 · NVD
- FIRST EPSS
- GHSA-3c6j-x3h2-c2j2 · GitHub Advisory Database · CC BY 4.0
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