CVE-2023-38000 — Auth

Auth. Stored (contributor+) Cross-Site Scripting (XSS) vulnerability in WordPress core 6.3 through 6.3.1, from 6.2 through 6.2.2, from 6.1 through 6.1.3, from 6.0 through 6.0.5, from 5.9 through 5.9.7 and Gutenberg plugin <= 16.8.0 versions.

01What is this vulnerability?

Auth. Stored (contributor+) Cross-Site Scripting (XSS) vulnerability in WordPress core 6.3 through 6.3.1, from 6.2 through 6.2.2, from 6.1 through 6.1.3, from 6.0 through 6.0.5, from 5.9 through 5.9.7 and Gutenberg plugin <= 16.8.0 versions.

02Affected products

Vendor	Product	Versions
WordPress.org	WordPress	6.3, 6.2, 6.1, 6.0, 5.9
Gutenberg Team	Gutenberg	n/a

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

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

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

• Published: 2023-10-13T09:55:54.690Z
• Last modified: 2024-08-02T17:23:27.829Z

09References

• patchstack.com — https://patchstack.com/articles/wordpress-core-6-3-2-security-update-technical-a…
• patchstack.com — https://patchstack.com/database/vulnerability/wordpress/wordpress-core-6-3-2-con…
• patchstack.com — https://patchstack.com/database/vulnerability/gutenberg/wordpress-gutenberg-plug…