{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53525","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-09T17:30:33.456Z","datePublished":"2026-08-21T22:19:21.278Z","dateUpdated":"2026-08-25T16:46:03.941Z"},"containers":{"cna":{"title":"WeeChat has Non-Constant-Time Password Hash Comparison in Relay Authentication","problemTypes":[{"descriptions":[{"cweId":"CWE-208","lang":"en","description":"CWE-208: Observable Timing Discrepancy","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/weechat/weechat/security/advisories/GHSA-vhv8-g2r9-cwcc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/weechat/weechat/security/advisories/GHSA-vhv8-g2r9-cwcc"}],"affected":[{"vendor":"weechat","product":"weechat","versions":[{"version":">= 0.3.4, < 4.9.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-21T22:19:21.278Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-vhv8-g2r9-cwcc","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/weechat/weechat/security/advisories/GHSA-vhv8-g2r9-cwcc","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-25T16:45:37.380114Z","id":"CVE-2026-53525","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-25T16:46:03.941Z"}}]}}