{"action":"Upgrade py7zr to 1.1.3 or later.","affected":[{"fixed":"1.1.3","introduced":"0"}],"component":"py7zr","cve_ids":["CVE-2026-55206"],"ecosystem":"PyPI","epss":0.00266,"exploited":false,"fixed_versions":["1.1.3"],"ghsa_id":"GHSA-h4gh-22qq-72r7","id":"tcs_01M5KH2NQJ1TWRXD35YSPE759D","modified_at":"2026-07-13T16:32:08.005149350Z","published_at":"2026-07-13T15:46:22.282856Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2973","https://github.com/miurahr/py7zr/security/advisories/GHSA-h4gh-22qq-72r7","https://github.com/miurahr/py7zr","https://github.com/miurahr/py7zr/releases/tag/v1.1.3","https://pypi.org/project/py7zr","https://github.com/advisories/GHSA-h4gh-22qq-72r7","https://nvd.nist.gov/vuln/detail/CVE-2026-55206"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2026-2973","url":"https://osv.dev/vulnerability/PYSEC-2026-2973"}],"summary":"py7zr: O(n^2) algorithmic complexity DoS in PackInfo._read()"}