{"schemaVersion":3,"id":"CVE-2026-6210","aliases":["UBUNTU-CVE-2026-6210","DEBIAN-CVE-2026-6210","openSUSE-SU-2026:10742-1"],"status":"published","duplicateOf":null,"title":null,"description":"A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image.\n\n\n\nWhen processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a <line> element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker,\n followed by an endless recursion that bypasses the marker recursion\nguard through incorrect virtual dispatch. The result is an application\ncrash (denial of service).\n\n\n\nThis issue affects Qt SVG:\nfrom 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.","dates":{"published":"2026-05-06T11:59:01.727Z","modified":"2026-07-29T08:59:56.543Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.7,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00472,"percentile":0.39512,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.19300000000000003,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00279},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00472,"percentile":0.39512}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00279,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00472,"percentile":0.39512}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-122","name":"Heap-based Buffer Overflow","description":"A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/122.html"},{"id":"CWE-843","name":"Access of Resource Using Incompatible Type ('Type Confusion')","description":"The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/843.html"}],"affected":[{"vendor":"debian","product":"qt6-svg","name":"qt6-svg","label":"qt6-svg","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/qt6-svg","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 6.10.2-6","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 6.10.2-6","eol":null,"hubHref":null},{"vendor":"debian","product":"qtsvg-opensource-src","name":"qtsvg-opensource-src","label":"qtsvg-opensource-src","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/qtsvg-opensource-src","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"qt6-svg","name":"qt6-svg","label":"qt6-svg","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qt6-svg","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"qt","product":"qt","name":"qt","label":"qt","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 6.7.0, < 6.8.8","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.9.0, < 6.11.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.7.0, < 6.8.8 | ≥ 6.9.0, < 6.11.1","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"qt","label":"Qt","category":"framework"}},"hubHref":"/vendor/qt/qt"},{"vendor":"opensuse","product":"qt6-svg&distro=openSUSE Tumbleweed","name":"qt6-svg","label":"qt6-svg&distro=openSUSE Tumbleweed","ecosystem":"openSUSE","cpePart":null,"purl":"pkg:rpm/opensuse/qt6-svg&distro=openSUSE Tumbleweed","purlType":"rpm","versions":[{"text":"< 6.11.0-2.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 6.11.0-2.1","eol":null,"hubHref":null}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://codereview.qt-project.org/c/qt/qtsvg/+/724887","label":"codereview.qt-project.org/c/qt/qtsvg/+/724887","hostname":"codereview.qt-project.org","tags":["REPORT"]},{"url":"https://issues.oss-fuzz.com/issues/496327371","label":"issues.oss-fuzz.com/issues/496327371","hostname":"issues.oss-fuzz.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-6210","label":"ubuntu.com/security/CVE-2026-6210","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-6210","label":"www.cve.org/CVERecord?id=CVE-2026-6210","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-6210","label":"security-tracker.debian.org/tracker/CVE-2026-6210","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-6210","label":"www.suse.com/security/cve/CVE-2026-6210","hostname":"www.suse.com","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-06T11:59:01.727Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-29T08:59:56.543Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T08:12:12.038Z","stale":false,"partial":false}}