CVE-2017-8809

CRITICAL LAB

MediaWiki < 1.27.4, 1.28.x < 1.28.3, 1.29.x < 1.29.2 - Reflected File Download via api.php

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8809. PoCs published by motikan2010.

AI-analyzed exploit summary This repository contains a proof-of-concept for CVE-2017-8809, a Reflected File Download (RFD) vulnerability in MediaWiki 1.29.1. The exploit leverages the 'api.php' script to serve a file with shell commands when a crafted URL is accessed by the target user.

Description

api.php in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 has a Reflected File Download vulnerability.

Exploits (1)

nomisec WORKING POC 5 stars
by motikan2010 · poc
https://github.com/motikan2010/CVE-2017-8809_MediaWiki_RFD

This repository contains a proof-of-concept for CVE-2017-8809, a Reflected File Download (RFD) vulnerability in MediaWiki 1.29.1. The exploit leverages the 'api.php' script to serve a file with shell commands when a crafted URL is accessed by the target user.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: MediaWiki 1.29.1
No auth needed
Prerequisites: Target user must access a crafted URL · MediaWiki instance must be vulnerable to RFD
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039812
Mailing List, Patch, Vendor Advisory x_refsource_confirm
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2017/dsa-4036

Scores

CVSS v3 9.8
EPSS 0.0771
EPSS Percentile 93.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Lab Environment

COMMUNITY
Community Lab
docker pull mediawiki:1.29.1

Details

CWE
CWE-74
Status published
Products (8)
debian/debian_linux 9.0
mediawiki/mediawiki 1.28.0
mediawiki/mediawiki 1.28.1
mediawiki/mediawiki 1.28.2
mediawiki/mediawiki 1.29.0
mediawiki/mediawiki 1.29.1
mediawiki/mediawiki < 1.27.3
n/a/MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2
Published Nov 15, 2017
Tracked Since Feb 18, 2026