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 inis_private_ip(), reaching services bound to IPv6 loopback across the http.get, http.request, and http.batch` modules.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-918"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73530.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.28.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"original_tag": "v2.28.0",
"range": [
{
"fixed": "029dba3fd7b26a8a81eb7ac7520fae1e454996e9"
}
],
"source": "REFERENCES_TAG"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.28.0"
}
],
"source": "DESCRIPTION"
}
]
}