{"action":"Upgrade flyto-core to 2.26.3 or later.","affected":[{"fixed":"2.26.3","introduced":"0"}],"component":"flyto-core","cve_ids":["CVE-2026-55787"],"ecosystem":"PyPI","epss":0.00292,"exploited":false,"fixed_versions":["2.26.3"],"ghsa_id":"GHSA-794r-5rp2-fpg8","id":"tcs_01M5KGZR1F37SJ89M8CC64Q4XH","modified_at":"2026-07-13T16:31:47.492722881Z","published_at":"2026-07-13T15:46:28.276574Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2481","https://github.com/flytohub/flyto-core/security/advisories/GHSA-794r-5rp2-fpg8","https://github.com/flytohub/flyto-core","https://pypi.org/project/flyto-core","https://github.com/advisories/GHSA-794r-5rp2-fpg8","https://nvd.nist.gov/vuln/detail/CVE-2026-55787"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-2481","url":"https://osv.dev/vulnerability/PYSEC-2026-2481"}],"summary":"flyto-core has SSRF guard bypass via IPv6 transition addresses (IPv4-mapped / 6to4 / NAT64) in validate_url_ssrf"}