{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/jenkins-plugins/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Jenkins Plugins"],"_cs_severities":["critical"],"_cs_tags":["jenkins","vulnerability","xss","code-execution"],"_cs_type":"threat","_cs_vendors":["Jenkins"],"content_html":"\u003cp\u003eMultiple vulnerabilities in Jenkins Plugins can be exploited by an attacker to achieve various malicious objectives. These include information disclosure, unauthorized file manipulation, cross-site scripting (XSS) attacks, arbitrary code execution, and the circumvention of security precautions. The lack of specific CVEs or further details in the advisory makes targeted detection engineering challenging, but the broad impact necessitates close monitoring of Jenkins environments. The unspecified nature of these vulnerabilities suggests a wide range of potential attack vectors affecting potentially all Jenkins Plugins.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a vulnerable Jenkins plugin version through banner grabbing (T1592.004) or public vulnerability databases.\u003c/li\u003e\n\u003cli\u003eThe attacker exploits a vulnerability in the plugin to bypass authentication or authorization controls (T1068).\u003c/li\u003e\n\u003cli\u003eThe attacker leverages a cross-site scripting (XSS) vulnerability within the plugin to inject malicious JavaScript code into a Jenkins page (T1190).\u003c/li\u003e\n\u003cli\u003eThe injected script executes in the context of a Jenkins user\u0026rsquo;s browser, potentially stealing credentials or session tokens.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the stolen credentials or tokens to authenticate to Jenkins with elevated privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker exploits a code execution vulnerability in the plugin to execute arbitrary commands on the Jenkins server (T1059.003).\u003c/li\u003e\n\u003cli\u003eThe attacker installs a backdoor or webshell on the Jenkins server for persistent access.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the compromised Jenkins server to pivot to other systems on the network, or to deploy malicious code to connected build agents and downstream systems.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities can lead to complete compromise of the Jenkins server and the surrounding network. Attackers could potentially steal sensitive information, such as credentials, API keys, and source code. They can also disrupt the software development and deployment process by injecting malicious code into builds, leading to widespread supply chain attacks. The lack of specific victim counts or sector targeting makes assessing the full impact difficult, but given the widespread use of Jenkins in software development, the potential for damage is significant.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade all Jenkins plugins to the latest versions to patch any known vulnerabilities.\u003c/li\u003e\n\u003cli\u003eImplement strong access controls and authentication policies for Jenkins to prevent unauthorized access (reference Attack Chain step 2).\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules provided in this brief to detect potential exploitation attempts in Jenkins environments.\u003c/li\u003e\n\u003cli\u003eMonitor Jenkins logs for suspicious activity, such as unauthorized access attempts, code execution, and file modifications.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-28T10:11:36Z","date_published":"2026-05-28T10:11:36Z","id":"https://feed.craftedsignal.io/briefs/2026-05-jenkins-plugins-vulns/","summary":"Multiple vulnerabilities exist in Jenkins Plugins that could allow an attacker to disclose information, manipulate files, conduct cross-site scripting attacks, execute arbitrary code, and bypass security measures.","title":"Multiple Vulnerabilities in Jenkins Plugins","url":"https://feed.craftedsignal.io/briefs/2026-05-jenkins-plugins-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed — Jenkins Plugins","version":"https://jsonfeed.org/version/1.1"}