{"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":0.00321,"exploited":false,"fixed_versions":["1.1.3"],"ghsa_id":"GHSA-h4gh-22qq-72r7","id":"tcs_01M5KFJR2D6TH0FCT8XH57DFT0","modified_at":"2026-07-13T16:43:06.899048591Z","published_at":"2026-06-19T21:16:33Z","references":["https://osv.dev/vulnerability/GHSA-h4gh-22qq-72r7","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"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-h4gh-22qq-72r7","url":"https://osv.dev/vulnerability/GHSA-h4gh-22qq-72r7"}],"summary":"py7zr: O(n^2) algorithmic complexity DoS in PackInfo._read()"}