CVE-2026-91855

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 v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/commit/028e1dbb5e3271035ccee906ef417a97fc523f71
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 17:17

Updated : 2026-09-16 13:42

NVD link : CVE-2026-91855

Mitre link : CVE-2026-91855

CVE.ORG link : CVE-2026-91855

JSON object : View

Products Affected

No product.

CWE

CWE-404

Improper Resource Shutdown or Release

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