MEDIUM 5.4 Microsoft
CVE-2026-70367
Stunnel: ssrf bypass in stunnel socks proxy via ipv4-mapped ipv6 loopback and unspecified addresses allows access to loopback-only services
Microsoft Security Update 2026-Aug: Stunnel: ssrf bypass in stunnel socks proxy via ipv4-mapped ipv6 loopback and unspecified addresses allows access to loopback-only services
Affected Products
- azl3 stunnel 5.74-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70367
- https://nvd.nist.gov/vuln/detail/CVE-2026-70367
This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-08-11 via Microsoft. Affected: azl3 stunnel 5.74-1 on Azure Linux 3.0.
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