weechat: WeeChat (Wee Enhanced Environment for Chat) is a free chat client
CVE-2026-53525 is fixed in weechat on 1 platform, first by DEBIAN-CVE-2026-53525, released August 18, 2026. It is not reported as exploited. Patch Radar priority: High.
WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext passwords. An attacker can exploit timing differences to extract the server-computed hash character by character, then authenticate using the correct hash without knowing the password. Version 4.9.1 fixes the issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| weechat · Debian 14 | 4.9.3-1 | DEBIAN-CVE-2026-53525 | Aug 18, 2026 |
| weechat · opensuse-leap 16.0 | 4.10.0-bp160.1.1 | OPENSUSE-SU-2026:21615-1 | Aug 20, 2026 |
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