{"schemaVersion":3,"id":"CVE-2026-53525","aliases":["UBUNTU-CVE-2026-53525","DEBIAN-CVE-2026-53525"],"status":"published","duplicateOf":null,"title":"WeeChat has Non-Constant-Time Password Hash Comparison in Relay Authentication","description":"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. 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