{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6653", "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "state": "PUBLISHED", "assignerShortName": "canonical", "dateReserved": "2026-04-20T06:37:45.271Z", "datePublished": "2026-06-22T12:40:31.424Z", "dateUpdated": "2026-06-22T12:40:31.424Z"}, "containers": {"cna": {"title": "libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "description": "CWE-416 Use after free", "type": "CWE"}, {"lang": "en", "cweId": "CWE-611", "description": "CWE-611 Improper Restriction of XML External Entity Processing", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-242", "descriptions": [{"lang": "en", "value": "CAPEC-242 Code Injection"}]}], "affected": [{"vendor": "GNOME", "product": "libxml2", "packageName": "libxml2", "repo": "https://gitlab.gnome.org/GNOME/libxml2", "versions": [{"status": "affected", "version": "2.9.11", "lessThan": "2.11.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling."}], "solutions": [{"lang": "en", "value": "Upgrade to libxml2 version 2.11.0 or later"}], "references": [{"url": "https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260", "tags": ["issue-tracking"]}, {"url": "https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058", "tags": ["issue-tracking"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"}}], "credits": [{"lang": "en", "value": "Geoffrey Humphreys", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "providerMetadata": {"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical", "dateUpdated": "2026-06-22T12:40:31.424Z"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.9.11,2.11.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "libxml2", "source": "cna", "vendor": "GNOME"}, "product": "libxml2", "vendor": "gnome"}], "created": "2026-06-22T14:45:05.434280+00:00", "updated": "2026-06-22T15:45:03.680593+00:00", "vendors": ["gnome", "gnome$PRODUCT$libxml2"]}