GHSA-XQ44-64RG-8G3H

Vulnerability from github – Published: 2026-03-22 03:30 – Updated: 2026-03-24 20:15
VLAI
Summary
Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function
Details

A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/free5gc/amf"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.3-0.20260306074636-52e9386401ce"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-4531"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-404"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-24T20:15:30Z",
    "nvd_published_at": "2026-03-22T02:15:59Z",
    "severity": "MODERATE"
  },
  "details": "A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.",
  "id": "GHSA-xq44-64rg-8g3h",
  "modified": "2026-03-24T20:15:31Z",
  "published": "2026-03-22T03:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4531"
    },
    {
      "type": "WEB",
      "url": "https://github.com/free5gc/free5gc/issues/792"
    },
    {
      "type": "WEB",
      "url": "https://github.com/free5gc/amf/pull/198"
    },
    {
      "type": "WEB",
      "url": "https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/free5gc/amf"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.352319"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.352319"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.774073"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.