CVE-2017-8809

critical

Published 2017-11-15 · Modified 2026-05-13

CVSS v3

9.8

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2

7.5

VIR risk

9.8

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.

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-8809

vendor Authored 2026-05-27

Vendor advisory: security@debian.org — https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201711-20

OS	Version	Status	Fixed in
arch		fixed	`1.29.2-1`
debian	bookworm	fixed	`1:1.27.4-1`
debian	bullseye	fixed	`1:1.27.4-1`
debian	forky	fixed	`1:1.27.4-1`
debian	sid	fixed	`1:1.27.4-1`
debian	trixie	fixed	`1:1.27.4-1`
debian	9.0	affected

Vendor	Product	Versions
mediawiki	mediawiki	`{"endIncluding":"1.27.3"}`
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`

CWE-74

Verify integrity in audit chain (admin only). AS-IS.