Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-94577.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-94577
Upstream
Published
2026-08-04T14:16:32Z
Modified
2026-08-30T05:26:50Z
Summary
CVE-2026-70367 affecting package stunnel 5.74-1
Details

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.

References

Affected packages

Azure Linux:3 / stunnel

Package

Name
stunnel
Purl
pkg:rpm/azure-linux/stunnel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
5.74-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-94577.json"