PT-2026-76565 · Weechat · Weechat
CVE-2026-53525
·
Published
2026-08-09
·
Updated
2026-08-21
CVSS v3.1
7.4
High
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
WeeChat versions 0.3.1 through 4.9.0
Description
Relay authentication uses non-constant-time string comparison functions
weechat strcasecmp() and strcmp() to verify password hashes and plaintext passwords. This allows an attacker to use timing differences to extract the server-computed hash character by character and authenticate without knowing the password.Recommendations
Update to version 4.9.1.
Exploit
Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Weechat