CVE-2025-13543

HIGH

PostGallery plugin <1.12.5 - File Upload

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2025-13543. PoCs published by Sudo-WP, MooseLoveti.

AI-analyzed exploit summary This repository is a security-hardened fork of the abandoned PostGallery WordPress plugin, addressing CVE-2025-13543 (arbitrary file upload vulnerability). It includes patches for file type validation, access control, and input sanitization.

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.

Exploits (2)

nomisec WRITEUP 1 stars
by Sudo-WP · poc
https://github.com/Sudo-WP/sudowp-postgallery

This repository is a security-hardened fork of the abandoned PostGallery WordPress plugin, addressing CVE-2025-13543 (arbitrary file upload vulnerability). It includes patches for file type validation, access control, and input sanitization.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: PostGallery WordPress plugin (versions prior to security fork)
No auth needed
Prerequisites: WordPress installation with vulnerable PostGallery plugin
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP
by MooseLoveti · poc
https://github.com/MooseLoveti/PostGallery-CVE-Report

This repository provides a detailed writeup for CVE-2025-13543, an authenticated arbitrary file upload vulnerability in the PostGallery WordPress plugin (versions <= 1.12.5). The vulnerability allows low-privileged users (e.g., Subscribers) to upload arbitrary PHP files via directory traversal, leading to remote code execution.

Classification
Writeup 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: PostGallery WordPress plugin <= 1.12.5
Auth required
Prerequisites: Authenticated access to a WordPress site with PostGallery plugin installed · Low-privileged user role (e.g., Subscriber)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 8.8
EPSS 0.0068
EPSS Percentile 47.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-434
Status published
Products (1)
rtowebsites/PostGallery < 1.12.5
Published Dec 04, 2025
Tracked Since Feb 18, 2026