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CI/CD at Risk: High-Severity Jenkins XSS Flaw Exposes Build Environments

Jenkins Security Update CVE-2026-27099 Jenkins security - CVE-2023-35141 Jenkins plugins, CVE-2025-47884

CI/CD at Risk: High-Severity Jenkins XSS Flaw Exposes Build Environments

Do Son February 19, 2026

Jenkins patches a high-severity stored XSS flaw (CVE-2026-27099) and an info disclosure bug. Update to version 2.551 or LTS 2.541.2 to secure pipelines.

Jenkins Patches High-Severity Vulnerabilities, Including a DoS Flaw Jenkins security advisory 2026, CVE-2026-53435, CVE-2026-53436 Jenkins Plugin RCE CI/CD Security Advisory Jenkins Vulnerability CVE-2026-33001 Jenkins CLI DoS, Coverage Plugin XSS Jenkins SAML Hijacking, Plaintext Secrets CVE-2023-43495 - Jenkins Vulnerability

Jenkins security advisory 2026, CVE-2026-53435, CVE-2026-53436 Jenkins Plugin RCE CI/CD Security Advisory Jenkins Vulnerability CVE-2026-33001 Jenkins CLI DoS, Coverage Plugin XSS Jenkins SAML Hijacking, Plaintext Secrets CVE-2023-43495 - Jenkins Vulnerability

Jenkins Patches High-Severity Vulnerabilities, Including a DoS Flaw

Do Son September 18, 2025

Jenkins has patched multiple flaws, including a high-severity DoS vulnerability in its bundled Jetty server that could allow unauthenticated attackers to crash the service.

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