{"id":"CVE-2026-73530","summary":"Flyto2 Core \u003c 2.28.0 SSRF Guard Bypass via is_private_ip()","details":"Flyto2 Core before 2.28.0 contains a server-side request forgery guard bypass vulnerability that allows attackers to reach internal services by supplying URLs using the unblocked IPv6 address `::` which the kernel routes to loopback identically to `0.0.0.0`. Attackers can submit requests or trigger 302 redirects to ` to bypass the private IP range and blocked hostname checks in `is_private_ip()`, reaching services bound to IPv6 loopback across the `http.get`, `http.request`, and `http.batch` modules.","aliases":["GHSA-gc4h-hj7x-gp5p"],"modified":"2026-08-15T11:48:11.008607642Z","published":"2026-08-13T19:01:46.150Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73530.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73530.json"},{"type":"ADVISORY","url":"https://github.com/flytohub/flyto-core/releases/tag/v2.28.0"},{"type":"ADVISORY","url":"https://github.com/flytohub/flyto-core/security/advisories/GHSA-gc4h-hj7x-gp5p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73530"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/flyto2-core-ssrf-guard-bypass-via-is-private-ip"},{"type":"PACKAGE","url":"https://github.com/flytohub/flyto-core"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/flytohub/flyto-core","events":[{"introduced":"0"},{"fixed":"029dba3fd7b26a8a81eb7ac7520fae1e454996e9"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.28.0"}],"source":["AFFECTED_FIELD","DESCRIPTION","REFERENCES"]}}],"versions":["v2.26.11","v2.26.10","v2.26.9","v2.26.8","v2.26.7","v2.26.6","v2.26.4","v2.26.3","v2.26.0","v2.25.27","v2.17.6","v2.16.3","v2.5.0","v2.2.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73530.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N"}]}