{"action":"Upgrade asteval to 1.0.9 or later.","affected":[{"fixed":"1.0.9","introduced":"0"}],"component":"asteval","cve_ids":["CVE-2026-55244"],"ecosystem":"PyPI","epss":0.00177,"exploited":false,"fixed_versions":["1.0.9"],"ghsa_id":"GHSA-89v8-rhwq-hf77","id":"tcs_01M5KH7WWWQMANZVHFV22CCC1W","modified_at":"2026-09-10T12:15:04.049966682Z","published_at":"2026-09-10T09:44:52.019188Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3807","https://github.com/lmfit/asteval/security/advisories/GHSA-89v8-rhwq-hf77","https://github.com/lmfit/asteval/pull/153","https://github.com/lmfit/asteval/commit/a3e56e7f8ed567a4817684d94213b290359077b4","https://github.com/lmfit/asteval","https://github.com/lmfit/asteval/releases/tag/1.0.9","https://pypi.org/project/asteval","https://github.com/advisories/GHSA-89v8-rhwq-hf77","https://nvd.nist.gov/vuln/detail/CVE-2026-55244"],"severity":{"label":"medium","score":5},"sources":[{"source":"osv","source_id":"PYSEC-2026-3807","url":"https://osv.dev/vulnerability/PYSEC-2026-3807"}],"summary":"asteval has a Sandbox Escape via BaseException Subclasses"}