CVE-2021-46146
MEDIUMCVSS 5.4/10EPSS 0.57%
Last modified
CVE-2021-46146 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The WikibaseMediaInfo component is vulnerable to XSS via the caption fields for a given media file.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.
Description
An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The WikibaseMediaInfo component is vulnerable to XSS via the caption fields for a given media file.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | < 1.35.5 |
| Mediawiki | Mediawiki | >= 1.36.0, < 1.36.3 |
| Mediawiki | Mediawiki | >= 1.37.0, < 1.37.1 |
References
- https://gerrit.wikimedia.org/r/q/I58d37fb59f998f5bec4a018bf9da96a777f8ff78Third Party Advisory
- https://phabricator.wikimedia.org/T293556Third Party Advisory
- https://gerrit.wikimedia.org/r/q/I58d37fb59f998f5bec4a018bf9da96a777f8ff78Third Party Advisory
- https://phabricator.wikimedia.org/T293556Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-46146?
An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The WikibaseMediaInfo component is vulnerable to XSS via the caption fields for a given media file.
How severe is CVE-2021-46146?
CVE-2021-46146 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46146?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-46146?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST