[UPDATE] [medium] MediaWiki: Multiple vulnerabilities

CSIRTS triage

What

An attacker can exploit multiple vulnerabilities to conduct unspecified attacks, disclose information, execute arbitrary program code, and conduct cross-site scripting attacks.

Who is affected

Deployments of MediaWiki with the affected versions.

Urgency

Remediation is medium urgency as multiple attack vectors are present.

Action

Update to the latest version of MediaWiki.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

medium

Published

2026-07-06

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2135

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-580240.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
• Low exploitation riskCVE-2026-580250.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all scored CVEs.
• Low exploitation riskCVE-2026-580260.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
• Low exploitation riskCVE-2026-580270.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 29% of all scored CVEs.
• Low exploitation riskCVE-2026-580280.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
• Low exploitation riskCVE-2026-580290.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
• Low exploitation riskCVE-2026-580300.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.
• Low exploitation riskCVE-2026-580320.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.
• Low exploitation riskCVE-2026-580330.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 29% of all scored CVEs.
• Low exploitation riskCVE-2026-580360.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownDSA-6380-1 mediawiki - security updatedebian
• unknownCVE-2026-8857: A vulnerability in Wikimedia Foundation timeline. This vulnerability is associated with program…nvd
• unknownCVE-2026-58038: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd
• unknownCVE-2026-58037: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd
• unknownCVE-2026-58036: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundati…nvd
• unknownCVE-2026-58033: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundati…nvd
• unknownCVE-2026-58032: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd
• unknownCVE-2026-58030: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd
• unknownCVE-2026-58029: Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program…nvd
• unknownCVE-2026-58028: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd
• unknownCVE-2026-58027: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundati…nvd
• unknownCVE-2026-58026: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundati…nvd

Recent advisories for MediaWiki

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• unknownDSA-6380-1 mediawiki - security updatedebian · 2026-07-05
• high[NEW] [high] MediaWiki and Extensions: Multiple vulnerabilitiescert-bund · 2026-07-02
• criticalCVE-2026-14363: Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerabi…nvd · 2026-07-01
• unknownCVE-2026-58517: Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawi…nvd · 2026-07-01
• unknownCVE-2026-14358: Improper neutralization of input during web page generation ('cross-site scripting') vulnerabi…nvd · 2026-07-01
• criticalCVE-2026-58521: Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerabi…nvd · 2026-07-01

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