CVE-2026-53525

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{"affected": [{"affectedData": [{"product": "weechat", "vendor": "weechat", "versions": [{"status": "affected", "version": ">= 0.3.4, < 4.9.1"}]}], "source": "security-advisories@github.com"}], "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."}, {"lang": "es", "value": "WeeChat (Wee Enhanced Environment for Chat) es un cliente de chat gratuito. En las versiones 0.3.1 a 4.9.0, la autenticaci\u00f3n de retransmisi\u00f3n de WeeChat utiliza funciones de comparaci\u00f3n de cadenas de tiempo no constante (weechat_strcasecmp y strcmp) para verificar los hashes de contrase\u00f1a y las contrase\u00f1as en texto plano. Un atacante puede explotar las diferencias de tiempo para extraer el hash calculado por el servidor car\u00e1cter por car\u00e1cter, y luego autenticarse usando el hash correcto sin conocer la contrase\u00f1a. La versi\u00f3n 4.9.1 corrige el problema."}], "id": "CVE-2026-53525", "lastModified": "2026-10-14T19:10:00.297", "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": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53525", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T16:45:37.380114Z", "version": "2.0.3"}}]}, "published": "2026-08-21T23:16:26.363", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/weechat/weechat/security/advisories/GHSA-vhv8-g2r9-cwcc"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/weechat/weechat/security/advisories/GHSA-vhv8-g2r9-cwcc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-208"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"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"]}