Information disclosure in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests.
Why it matters now
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-2017-06324 Improper input validation in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x…Priority LOW 36
- TI-2017-06323 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-2017-8810
- 2026-10-03 Alias added: GHSA-j76f-f4hg-c8qp
References
Sources
- CVE-2017-8810 · CVE Program
- CVE-2017-8810 · NVD
- FIRST EPSS
- GHSA-j76f-f4hg-c8qp · GitHub Advisory Database · CC BY 4.0
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