CVE-2026-4531: GO-2026-5767 - Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function in github.com/free5gc/amf

CVE-2026-4531 · Severity: low · CVSS 3.1 · Published 2026-06-25

Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function in github.com/free5gc/amf

Technologies: github.com/free5gc/amf (Go). Vendors: Go.

Quick answers

Is CVE-2026-4531 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-4531 being exploited in the wild.
How severe is CVE-2026-4531?
Low severity, with a CVSS score of 3.1, published 25 June 2026.
Which products and versions are affected?
github.com/free5gc/amf (Go) SEMVER:introduced=0,fixed=1.4.3-0.20260306074636-52e9386401ce.
Is there a fix for CVE-2026-4531?
Yes. github.com/free5gc/amf (Go): upgrade to 1.4.3-0.20260306074636-52e9386401ce or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-4531?
Check whether you run github.com/free5gc/amf (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/free5gc/amf (Go): upgrade to 1.4.3-0.20260306074636-52e9386401ce or later
    go get github.com/free5gc/amf@v1.4.3-0.20260306074636-52e9386401ce

Affected products

  • github.com/free5gc/amf (Go) SEMVER:introduced=0,fixed=1.4.3-0.20260306074636-52e9386401ce

Identifiers

  • CVE-2026-4531
  • GHSA-xq44-64rg-8g3h
  • GO-2026-5767

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