{"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": "2026-08-21T22:19:21.278Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "weechat", "vendor": "weechat", "versions": [{"status": "affected", "version": ">= 0.3.4, < 4.9.1"}]}], "source": "[email protected]"}], "cveTags": [], "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."}], "id": "CVE-2026-53525", "lastModified": "2026-08-21T23:16:26.363", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-08-21T23:16:26.363", "references": [{"source": "[email protected]", "url": "https://github.com/weechat/weechat/security/advisories/GHSA-vhv8-g2r9-cwcc"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-208"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.3.4,4.9.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "weechat", "source": "cna", "vendor": "weechat"}, "product": "weechat", "vendor": "weechat"}], "created": "2026-08-21T23:30:16.891752+00:00", "updated": "2026-08-21T23:30:17.170759+00:00", "vendors": ["weechat", "weechat$PRODUCT$weechat"]}