Stack-based buffer overflow in WeeChat - #VU139817
Published: July 28, 2026
Vulnerability identifier: #VU139817
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Affected software:
WeeChat
WeeChat
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to a boundary error in the "irc_message_split_join" function. A remote attacker can trigger stack-based buffer overflow and perform a denial of service (DoS) attack on the system.
Remediation
Install updates from vendor's website.