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  5. CVE-2026-33904

CVE-2026-33904: Ella Core has a Denial of Service via SCTP connection cleanup deadlock

March 26, 2026 (updated March 27, 2026)

A deadlock in the AMF’s SCTP notification handler causes the entire AMF control plane to hang until the process is restarted.

References

  • github.com/advisories/GHSA-9h59-p45g-445h
  • github.com/ellanetworks/core
  • github.com/ellanetworks/core/commit/999f606c5cae261471d9e3f063d7ecd1bd754076
  • github.com/ellanetworks/core/releases/tag/v1.7.0
  • github.com/ellanetworks/core/security/advisories/GHSA-9h59-p45g-445h
  • nvd.nist.gov/vuln/detail/CVE-2026-33904

Code Behaviors & Features

Detect and mitigate CVE-2026-33904 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 1.7.0

Fixed versions

  • 1.7.0

Solution

Upgrade to version 1.7.0 or above.

Impact 6.5 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-833: Deadlock

Source file

go/github.com/ellanetworks/core/CVE-2026-33904.yml

Spotted a mistake? Edit the file on GitLab.

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