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CVE-2026-65899

DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPurify instance reused across trust boundaries stays bound to a previously supplied TRUSTED_TYPES_POLICY. A later caller that requests RETURN_TRUSTED_TYPE output receives a TrustedHTML object created by the old (potentially unsafe) policy rather than a clean default, which can lead to script execution at a Trusted Types sink. Passing TRUSTED_TYPES_POLICY: null on the later call als
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dbbf92399fa0d1fcb95e4566313ea0395d0cd6b1a466c2c1dcfc97c7b63e0f1a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"DOMPurify","vendor":"cure53","versions":[{"lessThan":"3.4.9","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.4.9","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-693","description":"Protection Mechanism Failure","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/cure53/DOMPurify/commit/825e617753ac1169306a542d3174a77f717a0cf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/references/1
{"name":"GitHub Security Advisory (GHSA-vxr8-fq34-vvx9)","tags":["vendor-advisory"],"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-vxr8-fq34-vvx9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/references/0
{"name":"VulnCheck Advisory: DOMPurify before 3.4.9 Trusted Types Policy State Contamination","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/dompurify-before-trusted-types-policy-state-contamination"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3bc56d54ef256c2ac015b88543d4d24f1ffd337d67905adb1b777f5e79a3685f · sha256:276ce6a194ecc75b… · /containers/cna/references/2

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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