{"id":"CVE-2026-65820","summary":"aeon: Privileged GitHub Actions workflow allowed fork-controlled code execution","details":"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.","aliases":["GHSA-mhg2-mc45-wrjr"],"modified":"2026-11-12T02:48:35.519648858Z","published":"2026-11-11T17:48:51.628Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-94"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65820.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65820.json"},{"type":"FIX","url":"https://github.com/aeon-toolkit/aeon/commit/99261e1355c89a316bf0824bb03f855c6aadae8f"},{"type":"FIX","url":"https://github.com/aeon-toolkit/aeon/pull/3394"},{"type":"ADVISORY","url":"https://github.com/aeon-toolkit/aeon/security/advisories/GHSA-mhg2-mc45-wrjr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65820"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/aeon-toolkit/aeon","events":[{"introduced":"0"},{"fixed":"e5c37bb0a54950b552df33546c47510fffa0752b"},{"fixed":"99261e1355c89a316bf0824bb03f855c6aadae8f"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"fixed":"1.5.0"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"source":"REFERENCES_COMMIT","range":[{"fixed":"99261e1355c89a316bf0824bb03f855c6aadae8f"}]}]}}],"versions":["v1.4.0","v1.3.0","v1.2.0","v1.1.0","v1.0.0","v0.11.1","v0.11.0","v0.10.0","v0.9.0","v0.8.1","v0.8.0","v0.7.1","v0.7.0","v0.6.0","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0","v0.1.0rc0","sktime-v0.16.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65820.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}]}