{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/tags/pipeline-integrity/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["CircleCI"],"_cs_severities":["medium"],"_cs_tags":["ci-cd","cloud-security","pipeline-integrity"],"_cs_type":"advisory","_cs_vendors":["CircleCI"],"content_html":"\u003cp\u003eThis threat brief addresses the risk of unauthorized modifications to CI/CD pipeline configurations in CircleCI, specifically where mandatory security jobs are omitted or disabled. Attackers targeting the software supply chain may attempt to alter pipeline workflows to bypass automated security testing, such as SAST, DAST, or dependency scanning. By disabling these mandatory jobs, malicious code can be introduced into the development lifecycle without triggering alerts or automated blocks. This analytic identifies such anomalies by monitoring CircleCI logs and validating that required security tasks are executed within every workflow. Detecting this activity is critical for maintaining pipeline integrity and preventing the deployment of compromised artifacts.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains access to the version control system or the CI/CD configuration files (e.g., .circleci/config.yml) associated with the project.\u003c/li\u003e\n\u003cli\u003eThe attacker modifies the workflow configuration to exclude mandatory security or quality assurance jobs.\u003c/li\u003e\n\u003cli\u003eThe attacker pushes the malicious or modified configuration file to the repository.\u003c/li\u003e\n\u003cli\u003eCircleCI detects the new configuration and triggers the CI/CD pipeline.\u003c/li\u003e\n\u003cli\u003eThe pipeline executes the modified workflow, skipping the required security scanning tasks.\u003c/li\u003e\n\u003cli\u003eThe pipeline completes successfully without performing the necessary security validations.\u003c/li\u003e\n\u003cli\u003eMalicious code is processed through the pipeline, potentially leading to unauthorized execution or compromised software delivery.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful bypass of security checks in a CI/CD pipeline can lead to the introduction of vulnerabilities or malicious payloads into production environments. This compromise threatens the integrity of the organization's software supply chain, potentially leading to data breaches, system downtime, and severe reputational damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cp\u003eDetection engineering teams should monitor CircleCI logs for workflow execution anomalies. Implement the provided logic to track mandatory security jobs against reported execution logs to identify unauthorized workflow modifications.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eImplement visibility into CircleCI pipeline logs to monitor job execution status.\u003c/li\u003e\n\u003cli\u003eReview and maintain a strict list of mandatory security jobs that must run in every project workflow.\u003c/li\u003e\n\u003cli\u003eInvestigate any pipeline workflow where a mandatory security job is skipped or absent.\u003c/li\u003e\n\u003cli\u003eEnforce code signing or branch protection rules in the source control management system to prevent unauthorized modifications to pipeline configuration files.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-10-05T12:05:45Z","date_published":"2026-10-05T12:05:45Z","id":"https://feed.craftedsignal.io/briefs/2026-10-circleci-security-job-bypass/","summary":"Detection of unauthorized omission of mandatory security jobs within CircleCI workflows which could indicate an attacker attempting to bypass CI/CD pipeline integrity checks.","title":"Detection of Bypassed Mandatory Security Jobs in CircleCI Pipelines","url":"https://feed.craftedsignal.io/briefs/2026-10-circleci-security-job-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed - Pipeline-Integrity","version":"https://jsonfeed.org/version/1.1"}