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CVE-2026-6210

A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. When 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, followed by an endless recursion that bypasse
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c2bfd909992e523298150f570638cecc5158755c448b0426ad697bf8ec4b517e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-843","description":"CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","modules":["Qt SVG"],"product":"Qt","programFiles":["src/svg/qsvgstructure.cpp"],"repo":"git://code.qt.io/qt/qtsvg.git","vendor":"Qt","versions":[{"lessThan":"6.8.8","status":"affected","version":"6.7.0","versionType":"python"},{"lessThan":"6.11.1","status":"affected","version":"6.9.0","versionType":"python"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-843","description":"CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"url":"https://codereview.qt-project.org/c/qt/qtsvg/+/724887"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/references/0
{"url":"https://issues.oss-fuzz.com/issues/496327371"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:523e25b5f0a9c77789d34f988f3274da2383eb8c925bcec412c50c02b93c39b4 · sha256:987ffcad091afc53… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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