CVE-2026-53448: coturn SQL Injection

Description

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.12.0, the coturn HTTPS admin panel passes HTTP query parameters directly into SQL queries via snprintf string interpolation without sanitization. The is_secure_string filter that protects the STUN protocol path is not applied to the admin panel's delete-user, delete-secret, and delete-IP operations, so an authenticated admin can inject arbitrary SQL through the du, ds, and dip parameters, gaining full database control and potentially OS-level access via PostgreSQL COPY TO PROGRAM. This issue is fixed in version 4.12.0.

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CVSS v3.1 Score

7.2

HIGH

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

EPSS — Exploit Prediction

0.0070

Probability of exploitation

0.49%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-89 SQL Injection

Affected Products

Vendor	Product	Versions
coturn_project	coturn	< 4.12.0

References

Advisories & Patches

https://github.com/coturn/coturn/commit/b84dbab1d1aa6e2bf0211a1cdbb250d6de2a0d09 https://github.com/coturn/coturn/pull/1924 https://github.com/coturn/coturn/security/advisories/GHSA-v8hj-2xx7-xmp5 https://github.com/coturn/coturn/security/advisories/GHSA-v8hj-2xx7-xmp5

Exploits

https://github.com/coturn/coturn/security/advisories/GHSA-v8hj-2xx7-xmp5 https://github.com/coturn/coturn/security/advisories/GHSA-v8hj-2xx7-xmp5

Other References

https://github.com/coturn/coturn/releases/tag/4.12.0

Frequently Asked Questions

What is CVE-2026-53448? +

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.12.0, the coturn HTTPS admin panel passes HTTP query parameters directly into SQL queries via snprintf string interpolation without sanitization. The is_secure_string filter that protects the STUN protocol path is not applied to the admin panel's delete-user, delete-secret, and delete-IP operations, so an authenticated admin can inject arbitrary SQL through the du, ds, and dip parameters, gaining full database control and potentially OS-level access via PostgreSQL COPY TO PROGRAM. This issue is fixed in version 4.12.0. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-53448? +

CVE-2026-53448 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0070, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-53448? +

CVE-2026-53448 affects products from coturn_project, specifically: coturn. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-53448? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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