Stack-based buffer overflow in the inbound_cap_ls function in common/inbound.c in HexChat…
Priority MEDIUM 58CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Stack-based buffer overflow in the inbound_cap_ls function in common/inbound.c in HexChat 2.10.2 allows remote IRC servers to cause a denial of service (crash) via a large number of options in a CAP LS message.
Why it matters now
EPSS 0.34102 98th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
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
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hexchat_project:hexchat:2.10.2:*:*:*:*:*:*:* | 2.10.2 | Vulnerable | Hexchat Project |
- cpe:2.3:a:hexchat_project:hexchat:2.10.2:*:*:*:*:*:*:* Versions 2.10.2 Vulnerable ·Hexchat Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2016-2233
- 2026-10-03 Alias added: GHSA-xgr5-8gm5-gj39
References
More Hexchat Project Hexchat vulnerabilities
- TI-2016-01916 Directory traversal vulnerability in the client in HexChat 2.11.0 allows remote IRC… CVSS 3.0HIGH 7.4
- TI-2013-06101 The ssl_do_connect function in common/server.c in HexChat before 2.10.2, XChat, and… CVSS 3.0MEDIUM 6.5
Sources
- CVE-2016-2233 · CVE Program
- CVE-2016-2233 · NVD
- FIRST EPSS
- GHSA-xgr5-8gm5-gj39 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-2233 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences