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coturn IPv6 ACL Bypass Allows Unauthorized Access

MGASA-2026-0051
Summary

An update is available to fix a security issue in coturn that allows attackers to bypass certain access controls using a specific type of IP address. This could potentially allow unauthorized access to coturn servers. Update your coturn software to the latest version to fix this issue.

What to do
  • Update coturn to version 4.6.2-1.1.mga9.
Affected software
VendorProductAffected versionsFix available
– coturn <= 4.6.2-1.1.mga9 4.6.2-1.1.mga9
Original title
Updated coturn packages fix security vulnerability
Original description
IPv4-mapped IPv6 (::ffff:0:0/96) bypasses denied-peer-ip ACL.
(CVE-2026-27624)
Published: 9 Mar 2026 · Updated: 13 Mar 2026 · First seen: 9 Mar 2026