{"id":"CVE-2026-70367","published":"2026-08-04T14:16:32.557","lastModified":"2026-08-06T15:37:22.093","description":"A Server-Side Request Forgery (SSRF) bypass vulnerability exists in “stunnel” 5.79 and lower when configured in SOCKS proxy mode. This flaw allows a client to bypass intended localhost restrictions by using IPv4-mapped IPv6 addresses (e.g., “::ffff:127.0.0.1”) or unspecified addresses (\"0.0.0.0\", \"::\"), enabling access to loopback-only services on the \"stunnel\" host that should not be network-reachable.","cvssScore":5.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cwes":["CWE-918"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-70367","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462083","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462083","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}