CVE-2026-106807: open5GS PFCP transaction handling denial of service

CVE-2026-106807 · Severity: info · Published 2026-11-02

open5GS is a 5G network core software that handles session management and packet forwarding. A flaw in its PFCP (Packet Forwarding Control Protocol) message handling allows a remote attacker to crash the Session Management Function (SMF) or User Plane Function (UPF) by exhausting transaction resources, causing temporary service outages until the component restarts.

Technologies: Open5GS. Vendors: Open5GS.

Quick answers

Is CVE-2026-106807 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-106807 being exploited in the wild.
How severe is CVE-2026-106807?
Informational severity, published 2 November 2026.
Which products and versions are affected?
Open5GS v2.8.0.
Is there a fix for CVE-2026-106807?
Yes: fixed in Commit d91af3b or later (transaction allocation failure handling in PFCP/GTP paths). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-106807 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-106807?
Check whether you run Open5GS 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

  • Fixed in: Commit d91af3b or later (transaction allocation failure handling in PFCP/GTP paths)

Technical details

The vulnerability is a resource exhaustion leading to an unhandled assertion failure in the PFCP transaction handling path. When ogs_pfcp_xact_remote_create() fails to allocate a transaction due to pool exhaustion, the NULL return is not checked, causing ogs_assert(new) to fail in ogs_pfcp_xact_receive(). An unauthenticated remote attacker able to send PFCP messages to SMF or UPF can trigger this by flooding the component, terminating it with SIGABRT and denying service until restart.

Affected products

  • open5GS open5GS v2.8.0

Timeline

  • 2026-11-02: disclosed

References

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