Vulnerability Description
A security flaw has been discovered in Open5GS up to 2.7.7. Affected by this vulnerability is an unknown functionality of the file lib/pfcp/handler.c of the component PFCP Message Handler. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The patch is named 028e1dbb5e3271035ccee906ef417a97fc523f71. Applying a patch is the recommended action to fix this issue. CVE-2025-29339 describes a different assertion failure vulnerability in Open5GS UPF.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/open5gs/open5gs/
- https://github.com/open5gs/open5gs/commit/028e1dbb5e3271035ccee906ef417a97fc523f
- https://github.com/open5gs/open5gs/issues/4699
- https://vuldb.com/cve/CVE-2026-91855
- https://vuldb.com/submit/933834
- https://vuldb.com/vuln/404086
- https://vuldb.com/vuln/404086/cti
FAQ
What is CVE-2026-91855?
CVE-2026-91855 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A security flaw has been discovered in Open5GS up to 2.7.7. Affected by this vulnerability is an unknown functionality of the file lib/pfcp/handler.c of the component PFCP Message Handler. Performing ...
How severe is CVE-2026-91855?
CVE-2026-91855 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-91855?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.