CVE-2025-12973

HIGH

S2B AI Assistant for WordPress - Arbitrary File Upload

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-12973. PoCs published by d0n601.

AI-analyzed exploit summary This PoC exploits an authenticated arbitrary file upload vulnerability in the S2B AI Assistant WordPress plugin (versions <= 1.7.7), allowing users with Editor+ privileges to upload a malicious PHP shell via a flawed file extension whitelist check.

Description

The S2B AI Assistant – ChatBot, ChatGPT, OpenAI, Content & Image Generator plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the storeFile() function in all versions up to, and including, 1.7.8. This makes it possible for authenticated attackers, with Editor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Exploits (1)

nomisec WORKING POC

by d0n601 · poc

https://github.com/d0n601/CVE-2025-12973

View Code ZIP pw:eip

This PoC exploits an authenticated arbitrary file upload vulnerability in the S2B AI Assistant WordPress plugin (versions <= 1.7.7), allowing users with Editor+ privileges to upload a malicious PHP shell via a flawed file extension whitelist check.

Classification

Working Poc 100%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: S2B AI Assistant WordPress plugin <= 1.7.7

Auth required

Prerequisites: WordPress credentials with Editor role or higher · Access to /wp-admin/

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1505.003 - Web Shell

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5

Core References

Product

https://plugins.trac.wordpress.org/browser/s2b-ai-assistant/trunk/lib/helpers/Utils.php

Product

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3399267%40s2b-ai-assistant&new=3399267%40s2b-ai-assistant&sfp_email=&sfph_mail=

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/ac9d2b64-aff6-418a-bfe7-ec91b177ad6b?source=cve

Various Sources

https://github.com/d0n601/CVE-2025-12973

Various Sources

https://ryankozak.com/posts/cve-2025-12973/

Scores

CVSS v3 7.2

EPSS 0.0086

EPSS Percentile 53.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/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 (2)

oc3dots/S2B AI Assistant – ChatBot, AI Agents, ChatGPT API, Image Generator < 1.7.8

oc3dots/S2B AI Assistant – ChatBot, ChatGPT, OpenAI, Content & Image Generator < 1.7.8

Published Nov 21, 2025

Tracked Since Feb 18, 2026