CVE-2026-58034
Last modified
CVE-2026-58034 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser.TempAccounts/components/blockConnectedTempAccountsField.Vue. This issue affects CheckUser: from 1.46.0-rc.0 before 1.46.0.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser.TempAccounts/components/blockConnectedTempAccountsField.Vue. This issue affects CheckUser: from 1.46.0-rc.0 before 1.46.0.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mediawiki | Mediawiki | 1.46.0 | Rc0 |
References
- https://phabricator.wikimedia.org/T428820Permissions Required
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-58034?
How severe is CVE-2026-58034?
How do I fix CVE-2026-58034?
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.
Related CVEs from 2026
- CVE-2026-58029Vulnerability in Wikimedia Foundation MediaWiki. This vuln…6.5
- CVE-2026-5803A security flaw has been discovered in bigsk1 openai-realtim…6.3
- CVE-2026-58030Improper Neutralization of Input During Web Page Generation …6.1
- CVE-2026-58031Improper Neutralization of Input During Web Page Generation …5.4
- CVE-2026-58032Improper Neutralization of Input During Web Page Generation …6.1
- CVE-2026-58033Exposure of Sensitive Information to an Unauthorized Actor v…6.5
- CVE-2026-58035Improper Neutralization of Input During Web Page Generation …4.8
- CVE-2026-58036Exposure of Sensitive Information to an Unauthorized Actor v…7.5
- CVE-2026-58037Improper Neutralization of Input During Web Page Generation …6.1
- CVE-2026-58038Improper Neutralization of Input During Web Page Generation …6.1
- CVE-2026-58039A flaw in Node.js Permission Model enforcement allows proces…3.3
- CVE-2026-5804An improper authentication vulnerability was discovered in t…8.4
Are you affected by CVE-2026-58034?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST