{"action":"Upgrade resdata to 6.2.9 or later.","affected":[{"fixed":"6.2.9","introduced":"0"}],"component":"resdata","cve_ids":["CVE-2026-55209"],"ecosystem":"PyPI","epss":0.0078,"exploited":false,"fixed_versions":["6.2.9"],"ghsa_id":"GHSA-pr85-w493-9w3x","id":"tcs_01M5KFTMXC9492TNZNP2WENAVC","modified_at":"2026-08-19T12:55:43.580455017Z","published_at":"2026-08-18T20:11:04Z","references":["https://osv.dev/vulnerability/GHSA-pr85-w493-9w3x","https://github.com/equinor/resdata/security/advisories/GHSA-pr85-w493-9w3x","https://github.com/equinor/resdata","https://github.com/equinor/resdata/releases/tag/6.2.9"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-pr85-w493-9w3x","url":"https://osv.dev/vulnerability/GHSA-pr85-w493-9w3x"}],"summary":"resdata has Classic Buffer Overflow, Improper Validation of Array Index, NULL Pointer Dereference and Out-of-bounds Read"}