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CVE-2026-65914

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f65c9ecd6f6b42a4a2de4b0f03aff8b1a53d39885a5e74a49648e02375016727
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/dompurify","product":"DOMPurify","vendor":"cure53","versions":[{"lessThan":"3.3.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.3.2","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:173c5c9f167c73658d31ea266b5acbd14c26b29cfe5fd7c48c5270b095f75650 · sha256:bf0e6a6684aba3eb… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:173c5c9f167c73658d31ea266b5acbd14c26b29cfe5fd7c48c5270b095f75650 · sha256:bf0e6a6684aba3eb… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:173c5c9f167c73658d31ea266b5acbd14c26b29cfe5fd7c48c5270b095f75650 · sha256:bf0e6a6684aba3eb… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["exploit"],"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:173c5c9f167c73658d31ea266b5acbd14c26b29cfe5fd7c48c5270b095f75650 · sha256:bf0e6a6684aba3eb… · /containers/adp/0/references/0
{"name":"GitHub Security Advisory (GHSA-h8r8-wccr-v5f2)","tags":["vendor-advisory"],"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:173c5c9f167c73658d31ea266b5acbd14c26b29cfe5fd7c48c5270b095f75650 · sha256:bf0e6a6684aba3eb… · /containers/cna/references/0
{"name":"VulnCheck Advisory: DOMPurify before 3.3.2 Mutation XSS via Re-Contextualization","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:173c5c9f167c73658d31ea266b5acbd14c26b29cfe5fd7c48c5270b095f75650 · sha256:bf0e6a6684aba3eb… · /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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