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CVE-2026-47345

Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:121ce57d399a2a1d4028445f74e2ea533ec1b272117fa4ce63e56932f53a18fa
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"collectionURL":"https://packagist.org","defaultStatus":"unaffected","packageName":"typo3/html-sanitizer","product":"HTML Sanitizer","repo":"https://github.com/TYPO3/html-sanitizer","vendor":"TYPO3","versions":[{"lessThan":"2.3.2","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d1b77535783a37b884d79ec088387246ac25b555ac35bb94e9d87b10a0dc8ee8 · sha256:44e467f3267de1f5… · /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":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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:d1b77535783a37b884d79ec088387246ac25b555ac35bb94e9d87b10a0dc8ee8 · sha256:44e467f3267de1f5… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79 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:d1b77535783a37b884d79ec088387246ac25b555ac35bb94e9d87b10a0dc8ee8 · sha256:44e467f3267de1f5… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["patch"],"url":"https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d1b77535783a37b884d79ec088387246ac25b555ac35bb94e9d87b10a0dc8ee8 · sha256:44e467f3267de1f5… · /containers/cna/references/1
{"tags":["vendor-advisory"],"url":"https://typo3.org/security/advisory/typo3-core-sa-2026-006"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d1b77535783a37b884d79ec088387246ac25b555ac35bb94e9d87b10a0dc8ee8 · sha256:44e467f3267de1f5… · /containers/cna/references/0

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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