{"apiVersion":"1.0","identifier":"CVE-2026-53525","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. Version 4.9.1 fixes the issue.","publishedAt":"2026-08-21T23:16:26","lastModifiedAt":"2026-08-25T17:17:29","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53525","cvssScore":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","epssProbability":0.00254,"riskScore":0.76,"affectedProduct":"WeeChat","affectedVersions":">=0.3.1,<4.9.1","vulnerabilityType":"Other","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-53525","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-53525","en":"https://www.redsauce.net/en/cves/CVE-2026-53525","fr":"https://www.redsauce.net/fr/cves/CVE-2026-53525","pt":"https://www.redsauce.net/pt/cves/CVE-2026-53525","de":"https://www.redsauce.net/de/cves/CVE-2026-53525","sk":"https://www.redsauce.net/sk/cves/CVE-2026-53525","el":"https://www.redsauce.net/el/cves/CVE-2026-53525"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-53525"}}