SARA / Free Tools / CVE / CVE-2023-38500

CVE-2023-38500 — TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to provide cro

TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to provide cross-site-scripting-safe markup based on explicitly allowed tags, attributes and values. Starting in version 1.0.0 and prior to versions 1.5.1 and 2.1.2, due to an encoding issue in the serialization la

CVSS
4.7 MEDIUM
EPSS
0.34% (top 43.50%)
CWE
CWE-79
Published
2023-07-25T20:59:53.135Z
Last modified
2024-10-10T17:36:20.315Z
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

01What is this vulnerability?

TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to provide cross-site-scripting-safe markup based on explicitly allowed tags, attributes and values. Starting in version 1.0.0 and prior to versions 1.5.1 and 2.1.2, due to an encoding issue in the serialization layer, malicious markup nested in a `noscript` element was not encoded correctly. `noscript` is disabled in the default…

02Affected products

VendorProductVersions
TYPO3htmlsanitizer — >= 1.0.0, < 1.5.1, >= 2.0.0, < 2.1.2

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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