{"id":"CVE-2026-95620","state":"PUBLISHED","title":"Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt","description":"A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client support of the Qt Network module allows a malicious or compromised HTTP/2 server to cause the client application to crash, affecting availability.","publishedAt":"2026-10-23T10:56:15.281Z","updatedAt":"2026-10-23T10:56:15.281Z","severity":{"score":2.1,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green","source":"Qt"},"assigner":"Qt","products":["qt qt"],"affected":[{"vendor":"qt","product":"qt","defaultStatus":"unaffected","versions":[{"version":"0","status":"unknown","lessThan":"6.9.0","versionType":"python"},{"version":"6.9.0","status":"affected","lessThan":"6.11.3","versionType":"python"}],"modules":["qtbase"]}],"references":["https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-95620:","https://codereview.qt-project.org/c/qt/qtbase/+/759717"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/95xxx/CVE-2026-95620.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-95620","state":"PUBLISHED","datePublished":"2026-10-23T10:56:15.281Z","dateUpdated":"2026-10-23T10:56:15.281Z","assignerShortName":"Qt","assignerOrgId":"a59d8014-47c4-4630-ab43-e1b13cbe58e3","dateReserved":"2026-09-22T10:27:08.400Z"},"containers":{"cna":{"title":"Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt","descriptions":[{"lang":"en","value":"A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client support of the Qt Network module allows a malicious or compromised HTTP/2 server to cause the client application to crash, affecting availability."}],"affected":[{"vendor":"qt","product":"qt","defaultStatus":"unaffected","versions":[{"version":"0","status":"unknown","lessThan":"6.9.0","versionType":"python"},{"version":"6.9.0","status":"affected","lessThan":"6.11.3","versionType":"python"}],"modules":["qtbase"]}],"references":[{"url":"https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-95620:","tags":["vendor-advisory"]},{"url":"https://codereview.qt-project.org/c/qt/qtbase/+/759717","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"UNREPORTED","Safety":"NOT_DEFINED","Automatable":"NO","Recovery":"USER","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"LOW","providerUrgency":"GREEN","version":"4.0","baseSeverity":"LOW","baseScore":2.1,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","description":"CWE-416 Use After Free","type":"CWE"}]}],"providerMetadata":{"shortName":"Qt","orgId":"a59d8014-47c4-4630-ab43-e1b13cbe58e3","dateUpdated":"2026-10-23T10:56:15.281Z"},"impacts":[{"capecId":"CAPEC-220","descriptions":[{"lang":"en","value":"CAPEC-220 Client-Server Protocol Manipulation"}]}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.0","versionEndExcluding":"6.11.3"}]}]}],"credits":[{"lang":"en","value":"Daniel Birtwhistle","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}}}}}