CVE-2017-8809 json
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.
published 2017-11-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17752
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.7%
- EPSS 7.7% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- mediawiki Debian 14, Debian 13, Debian 12 1:1.27.4-1
debian advisories DEBIAN-CVE-2017-8809
- mediawiki Arch Linux 1.29.2-1
arch linux advisories AVG-490
Exploit prediction
7.71% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- n/a MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
lists.wikimedia.org
/pipermail/mediawiki-announce/2017-November/000216.html
mailing-list, patch, vendor-advisory
-
debian.org
/security/2017/dsa-4036
vendor-advisory, third-party-advisory
-
securitytracker.com
/id/1039812
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-8809
- NVD CVE-2017-8809
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.