What is CVE-2026-52022?

CVE-2026-52022 is a high-severity vulnerability in Kamailio, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-09-01.

How severe is CVE-2026-52022?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Kamailio

CVE-2026-52022

An issue in kamailio v.6.1.1 and before allows a remote attacker to cause a denial of service via the IMS P-CSCF registration handling components

Vulnerability class: DoS (Denial of Service)

Published 2026-09-01 · last modified 2026-09-04.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.5th percentile), scored 2026-10-17.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002

Affected products

Kamailio

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/kamailio/kamailio/issues/4670 (Exploit, Issue Tracking, Vendor Advisory)
github.com/kamailio/kamailio/commit/91c5ca751799db4f25a28a495350cc97f7c2f390 (Patch)

Frequently asked questions

What is CVE-2026-52022?: CVE-2026-52022 is a high-severity vulnerability in Kamailio, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-09-01.
How severe is CVE-2026-52022?: High severity. CVSS v3 base score is 7.5 out of 10.