CVE-2026-47345

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 71% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.1
EG Score
5.1(medium)
EPSS
28.6%
KEV
Not listed

Published

June 8, 2026

Last Modified

June 9, 2026

Advisory Details (2)

Auto-updated Jun 16, 2026
Patch available. Sources: github_commit.
generic

TYPO3-CORE-SA-2026-006: By-passing Cross-Site Scripting Protection in HTML Sanitizer - TYPO3 News

https://typo3.org/security/advisory/typo3-core-sa-2026-006
github_commit Patch Available

commit 8b5d0be44ded (TYPO3/html-sanitizer)

Patch available: TYPO3/html-sanitizer v2.3.2 (contains commit 8b5d0be44ded)

https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764

Vendor Advisories for CVE-2026-47345(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
typo3/html-sanitizerv1.0.0 ... v2.3.1 (37 versions)2.3.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 62× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 21:53 UTCEG score recompute
  4. 2026-07-05 02:30 UTCEPSS rescore
  5. 2026-07-04 20:09 UTCEG score recompute
  6. 2026-07-04 06:31 UTCEPSS rescore
  7. 2026-07-03 16:11 UTCEG score recompute
  8. 2026-07-02 12:17 UTCEG score recompute
  9. 2026-07-01 15:07 UTCEPSS rescore
  10. 2026-07-01 10:14 UTCEG score recompute
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-30 08:54 UTCEG score recompute
  13. 2026-06-29 07:31 UTCEG score recompute
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 05:26 UTCEG score recompute
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-27 04:05 UTCEG score recompute
  19. 2026-06-27 03:08 UTCEPSS rescore
  20. 2026-06-26 02:46 UTCEG score recompute
  21. 2026-06-25 13:49 UTCEPSS rescore
  22. 2026-06-25 01:26 UTCEG score recompute
  23. 2026-06-24 14:05 UTCEPSS rescore
  24. 2026-06-24 00:05 UTCEG score recompute
  25. 2026-06-23 21:33 UTCEPSS rescore
Show 37 more
  1. 2026-06-23 21:33 UTCEPSS rescore
  2. 2026-06-22 22:44 UTCEG score recompute
  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-22 14:25 UTCEPSS rescore
  5. 2026-06-21 20:13 UTCEG score recompute
  6. 2026-06-21 14:56 UTCEPSS rescore
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 01:59 UTCEPSS rescore
  9. 2026-06-21 01:59 UTCEPSS rescore
  10. 2026-06-20 11:19 UTCEG score recompute
  11. 2026-06-19 19:26 UTCEPSS rescore
  12. 2026-06-19 19:26 UTCEPSS rescore
  13. 2026-06-19 09:58 UTCEG score recompute
  14. 2026-06-18 17:52 UTCEPSS rescore
  15. 2026-06-18 17:52 UTCEPSS rescore
  16. 2026-06-18 07:49 UTCEG score recompute
  17. 2026-06-17 17:53 UTCEPSS rescore
  18. 2026-06-17 06:29 UTCEG score recompute
  19. 2026-06-16 17:53 UTCEPSS rescore
  20. 2026-06-16 05:07 UTCEG score recompute
  21. 2026-06-15 17:49 UTCEPSS rescore
  22. 2026-06-15 17:49 UTCEPSS rescore
  23. 2026-06-15 03:44 UTCEG score recompute
  24. 2026-06-14 23:18 UTCEPSS rescore
  25. 2026-06-14 02:25 UTCEG score recompute
  26. 2026-06-13 23:00 UTCEPSS rescore
  27. 2026-06-13 01:04 UTCEG score recompute
  28. 2026-06-12 23:12 UTCEPSS rescore
  29. 2026-06-12 23:12 UTCEPSS rescore
  30. 2026-06-11 23:44 UTCEG score recompute
  31. 2026-06-11 14:00 UTCEPSS rescore
  32. 2026-06-10 22:24 UTCEG score recompute
  33. 2026-06-10 22:18 UTCEPSS rescore
  34. 2026-06-10 13:22 UTCEPSS rescore
  35. 2026-06-10 13:22 UTCEPSS rescore
  36. 2026-06-09 21:05 UTCEG score recompute
  37. 2026-06-08 19:42 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-47345?
CVE-2026-47345 is a medium vulnerability published on June 8, 2026. 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.
When was CVE-2026-47345 disclosed?
CVE-2026-47345 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47345 actively exploited?
CVE-2026-47345 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47345?
CVE-2026-47345 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-47345?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47345, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47345

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