CVE-2026-34087
HIGHCVSS 7.5/10EPSS 0.27%
Last modified
CVE-2026-34087 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth. This issue affects OATHAuth: from * before 1.43.7, 1.44.4, 1.45.2.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth. This issue affects OATHAuth: from * before 1.43.7, 1.44.4, 1.45.2.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | < 1.43.7 |
| Mediawiki | Mediawiki | >= 1.44.0, < 1.44.4 |
| Mediawiki | Mediawiki | >= 1.45.0, < 1.45.2 |
References
- https://phabricator.wikimedia.org/T412061Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-34087?
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth.
This issue affects OATHAuth: from * before 1.43.7, 1.44.4, 1.45.2.
How severe is CVE-2026-34087?
CVE-2026-34087 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2026-34087?
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-2026-34087?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST