CVE-2026-53450
7.4 · HIGHOverview
CVE-2026-53450 is a high-severity vulnerability affecting coturn_project coturn. It was published on July 10, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, coturn rejects loopback peers by default unless allow-loopback-peers is enabled, but the default loopback guard can be bypassed by using the IPv4-mapped IPv6 peer address ::ffff:127.0.0.1 in a TURN XOR-PEER-ADDRESS attribute. ioa_addr_is_loopback checks for the literal IPv6 loopback shape before IPv4-mapped IPv6 handling, so good_peer_addr does not apply the default loopback rejection and an authenticated TURN client can expose services bound only to localhost on the coturn host through TURN relay traffic. This issue is fixed in version 4.13.0.
Remediation
Check the references section for vendor advisories and patches from coturn_project. Update coturn to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| coturn_project | coturn | >= 0, < 4.13.0 | Affected |
Frequently Asked Questions
What is CVE-2026-53450?
CVE-2026-53450 is a high-severity vulnerability affecting coturn_project coturn. It was published on July 10, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).
How severe is CVE-2026-53450?
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-53450?
Check the references section for vendor advisories and patches from coturn_project. Update coturn to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-53450?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-53450 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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