{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77401", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-20T19:55:27.023Z", "datePublished": "2026-09-16T14:28:01.186Z", "dateUpdated": "2026-09-16T14:28:01.186Z"}, "containers": {"cna": {"title": "Zope AccessControl: Information disclosure through Python string `format` and `format_map` functions", "problemTypes": [{"descriptions": [{"cweId": "CWE-693", "lang": "en", "description": "CWE-693: Protection Mechanism Failure", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-pq59-9fq7-m886", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-pq59-9fq7-m886"}, {"name": "https://github.com/zopefoundation/AccessControl/commit/f980450eea416718be62847f34dfd51822938e43", "tags": ["x_refsource_MISC"], "url": "https://github.com/zopefoundation/AccessControl/commit/f980450eea416718be62847f34dfd51822938e43"}, {"name": "https://github.com/zopefoundation/AccessControl/releases/tag/7.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/zopefoundation/AccessControl/releases/tag/7.4"}], "affected": [{"vendor": "zopefoundation", "product": "AccessControl", "versions": [{"version": "< 7.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-16T14:28:01.186Z"}, "descriptions": [{"lang": "en", "value": "Zope AccessControl provides a general security framework for use in Zope. Prior to 7.4, applications that allow untrusted users to create and execute AccessControl-controlled Python code do not safely guard str.format and str.format_map when those methods are reached through a str subclass. In both ImplPython.py and cAccessControl.c, Python formatting can recursively access attributes and subscriptions using unrestricted getattr and getitem behavior instead of the policy-restricted getattr and getitem operations. A controlled format string can therefore disclose objects reachable from values available to the formatting operation. This issue is fixed in version 7.4."}], "source": {"advisory": "GHSA-pq59-9fq7-m886", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "AccessControl", "vendor": "zopefoundation", "versions": [{"status": "affected", "version": "< 7.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Zope AccessControl provides a general security framework for use in Zope. Prior to 7.4, applications that allow untrusted users to create and execute AccessControl-controlled Python code do not safely guard str.format and str.format_map when those methods are reached through a str subclass. In both ImplPython.py and cAccessControl.c, Python formatting can recursively access attributes and subscriptions using unrestricted getattr and getitem behavior instead of the policy-restricted getattr and getitem operations. A controlled format string can therefore disclose objects reachable from values available to the formatting operation. This issue is fixed in version 7.4."}], "id": "CVE-2026-77401", "lastModified": "2026-09-16T15:17:46.617", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-16T15:17:46.617", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/zopefoundation/AccessControl/commit/f980450eea416718be62847f34dfd51822938e43"}, {"source": "security-advisories@github.com", "url": "https://github.com/zopefoundation/AccessControl/releases/tag/7.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-pq59-9fq7-m886"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}