Description
WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | weechat | 3.2.1-1 | — |
| Debian 13 | weechat | 3.2.1-1 | — |
| Debian 12 | weechat | 3.2.1-1 | — |
| Debian 9 | weechat | 1.6-1+deb9u3 | DLA-2770-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | weechat | 2.8-1ubuntu0.1~esm1 | USN-5258-1 |
| Ubuntu Pro 18.04 LTS | weechat | 1.9.1-1ubuntu1+esm1 | USN-5258-1 |
| Ubuntu Pro 16.04 LTS | weechat | 1.4-2ubuntu0.1+esm1 | USN-5258-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP3 | weechat | 3.2.1-bp153.2.3.1 | openSUSE-SU-2022:0083-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | weechat | 3.2.1-bp153.2.3.1 | openSUSE-SU-2022:0083-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | weechat | 3.5-r0 | — |
Advisories 3
- USN-5258-1 weechat vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2770-1 weechat - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2022:0083-1 Security update for weechat SUSE / openSUSE Security Updates · Feb 4, 2026