Bug 2571801 (CVE-2026-65820)

Summary: CVE-2026-65820 aeon: aeon: Arbitrary code execution via insecure GitHub Actions workflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in aeon. The project's automated continuous integration workflow improperly checked out and executed untrusted code from forked repositories in a privileged environment. A remote attacker could exploit this vulnerability by submitting a crafted pull request to achieve arbitrary code execution within the workflow runner. Consequently, an attacker could compromise elevated credentials and gain unauthorized write access to the repository.
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Description OSIDB Bzimport 2026-11-11 17:51:13 UTC 
aeon is a scikit-learn compatible Python library for learning from time series. Prior to version 1.5.0, a GitHub Actions workflow used pull_request_target for pre-commit checks on pull requests from forks. In this configuration, fork-controlled code could be checked out and executed in a privileged context. The vulnerable workflow also generated/used elevated credentials and could automatically commit or push fixes back to pull request branches. This created a potential token exposure and repository write path if an attacker submitted a malicious fork pull request designed to execute during the privileged workflow run. This issue has been patched in version 1.5.0.