Jenkins Security Advisory 2026-06-10

CSIRTS triage

What

This advisory addresses multiple vulnerabilities in Jenkins Core.

Who is affected

Deployments of Jenkins Core are affected.

Urgency

Remediation is necessary, but the severity is currently unknown.

Action

Update to the latest version of Jenkins Core.

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

Details

Source

Jenkins Security Advisories (INTL · vendor-psirt · site)

Severity

unknown

Published

2026-06-10

Exploitation

Not in CISA KEV at last sync

Original advisory: https://www.jenkins.io/security/advisory/2026-06-10/

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.

• Elevated exploitation riskCVE-2026-5343519.0% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 97% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534360.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534370.36% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534380.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534390.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534400.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534410.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-534420.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• mediumGHSA-mw82-xcg6-gx79: Jenkins: Missing permission check allows unauthorized cancellation of queue itemsghsa
• mediumGHSA-3rqh-hch3-jhpc: Jenkins Open Redirect via Relative Path Segments in Post-Login Redirect URLghsa
• mediumGHSA-463r-5m89-4xfr: Jenkins Open Redirect Through Newline/Tab Characters in Redirect URLghsa
• highGHSA-g2xq-2v27-4rh3: Jenkins arbitrary type deserialization from attacker-controlled config.xml allows remote …ghsa
• mediumGHSA-g28p-6mcc-v4rv: Jenkins exposes other users' timezone and view names to users with Overall/Read permissio…ghsa
• mediumGHSA-m6wv-wh8g-64xc: Jenkins does not encrypt secrets from POST config.xml submissions before storing them in …ghsa
• mediumGHSA-92m7-4fpw-2wxm: Jenkins: Open Redirect phishing attacks possible via "from" parameter in "Delegate to ser…ghsa

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