Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Mobi-Com Polska Sp. z o.o. / stunnel | affected 5.25 before 5.80 |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 6 | unaffected |
| Red Hat / Red Hat Enterprise Linux 7 | unaffected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 9 | affected |
CWE
CWE-918
References
- https://access.redhat.com/security/cve/CVE-2026-70367
- https://bugzilla.redhat.com/show_bug.cgi?id=2462083
ADP enrichment
No English description supplied.