Improper input validation in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x…
Priority LOW 36CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by "a lot of junk."
Why it matters now
EPSS 0.01606 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | 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 | — | No fix listed | CNA |
- MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 Vendor— Affected MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* | up to 1.27.3 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.28.0:*:*:*:*:*:*:* | 1.28.0 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.28.1:*:*:*:*:*:*:* | 1.28.1 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.28.2:*:*:*:*:*:*:* | 1.28.2 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.29.0:*:*:*:*:*:*:* | 1.29.0 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.29.1:*:*:*:*:*:*:* | 1.29.1 | Vulnerable | mediawiki |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* Versions up to 1.27.3 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.28.0:*:*:*:*:*:*:* Versions 1.28.0 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.28.1:*:*:*:*:*:*:* Versions 1.28.1 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.28.2:*:*:*:*:*:*:* Versions 1.28.2 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.29.0:*:*:*:*:*:*:* Versions 1.29.0 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.29.1:*:*:*:*:*:*:* Versions 1.29.1 Vulnerable ·mediawiki
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 — DSA-4036
7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2017-06319 Injection in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2Priority MEDIUM 53
- TI-2017-06320 Information disclosure in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x…Priority LOW 37
- TI-2017-06324 Improper input validation in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x…Priority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8814
- 2026-10-03 Alias added: GHSA-x2m4-j2wv-q4h4
References
Sources
- CVE-2017-8814 · CVE Program
- CVE-2017-8814 · NVD
- FIRST EPSS
- GHSA-x2m4-j2wv-q4h4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences