← Back to search

CVE-2026-70367

5.4 MEDIUM

Published 2026-08-04 · Updated 2026-08-06

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weaknesses

CWE-918

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.