Session fixation vulnerability in the CentralAuth extension for MediaWiki before 1.18.6…
Priority LOW 32Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Session fixation vulnerability in the CentralAuth extension for MediaWiki before 1.18.6, 1.19.x before 1.19.3, and 1.20.x before 1.20.1 allows remote attackers to hijack web sessions via the centralauth_Session cookie.
Why it matters now
EPSS 0.01161 67th 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mediawiki:mediawiki:1.20:*:*:*:*:*:*:* | 1.20 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.19:*:*:*:*:*:*:* | 1.19 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.19:beta_1:*:*:*:*:*:* | 1.19 beta_1 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.19:beta_2:*:*:*:*:*:* | 1.19 beta_2 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.19.1:*:*:*:*:*:*:* | 1.19.1 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.19.2:*:*:*:*:*:*:* | 1.19.2 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* | up to 1.18.5 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18:*:*:*:*:*:*:* | 1.18 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18:beta_1:*:*:*:*:*:* | 1.18 beta_1 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18.0:*:*:*:*:*:*:* | 1.18.0 | Vulnerable | mediawiki |
- cpe:2.3:a:mediawiki:mediawiki:1.20:*:*:*:*:*:*:* Versions 1.20 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.19:*:*:*:*:*:*:* Versions 1.19 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.19:beta_1:*:*:*:*:*:* Versions 1.19 beta_1 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.19:beta_2:*:*:*:*:*:* Versions 1.19 beta_2 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.19.1:*:*:*:*:*:*:* Versions 1.19.1 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.19.2:*:*:*:*:*:*:* Versions 1.19.2 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* Versions up to 1.18.5 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18:*:*:*:*:*:*:* Versions 1.18 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18:beta_1:*:*:*:*:*:* Versions 1.18 beta_1 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18.0:*:*:*:*:*:*:* Versions 1.18.0 Vulnerable ·mediawiki
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mediawiki:mediawiki:1.18.0:rc1:*:*:*:*:*:* | 1.18.0 rc1 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18.1:*:*:*:*:*:*:* | 1.18.1 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18.2:*:*:*:*:*:*:* | 1.18.2 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18.3:*:*:*:*:*:*:* | 1.18.3 | Vulnerable | mediawiki |
| cpe:2.3:a:mediawiki:mediawiki:1.18.4:*:*:*:*:*:*:* | 1.18.4 | Vulnerable | mediawiki |
- cpe:2.3:a:mediawiki:mediawiki:1.18.0:rc1:*:*:*:*:*:* Versions 1.18.0 rc1 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18.1:*:*:*:*:*:*:* Versions 1.18.1 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18.2:*:*:*:*:*:*:* Versions 1.18.2 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18.3:*:*:*:*:*:*:* Versions 1.18.3 Vulnerable ·mediawiki
- cpe:2.3:a:mediawiki:mediawiki:1.18.4:*:*:*:*:*:*:* Versions 1.18.4 Vulnerable ·mediawiki
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2012-5395
- 2026-10-03 Alias added: GHSA-c42w-vg6v-vvqm
References
More Mediawiki vulnerabilities
- TI-2023-18933 An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. CVSS 3.1CRITICAL 9.8
- TI-2023-13576 An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6… CVSS 3.1CRITICAL 9.8
- TI-2023-03312 Stored XSS leads to privilege escalation in MediaWiki v1.40.0 CVSS 3.1CRITICAL 9.0
- TI-2026-42109 Cross-site request forgery in Wikimedia Foundation Mediawiki - RedirectManager Extension CVSS 4.0MEDIUM 6.9
- TI-2024-22822 An issue was discovered in includes/CommentFormatter/CommentParser.php in MediaWiki… CVSS 3.1HIGH 7.4
- TI-2023-18935 An issue was discovered in the ProofreadPage (aka Proofread Page) extension for MediaWiki… CVSS 3.1MEDIUM 5.3
Sources
- CVE-2012-5395 · CVE Program
- CVE-2012-5395 · NVD
- FIRST EPSS
- GHSA-c42w-vg6v-vvqm · GitHub Advisory Database · CC BY 4.0
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