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

Source: https://junglewise.ai/threats/cve-2026-106807-a-denial-of-service-vulnerability-exists-in-open5gs-v2-8-0-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-02. Updated: 2026-11-02  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/open5gs). Vendors: [Open5GS](https://junglewise.ai/threats/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

- [https://gist.github.com/hackeryounow/a453020171ed5bc36036fb05c5fd448e](https://gist.github.com/hackeryounow/a453020171ed5bc36036fb05c5fd448e)
- [https://github.com/open5gs/open5gs/commit/d91af3b0ac59f6e9dab25718ef4eed9cbf2813ca](https://github.com/open5gs/open5gs/commit/d91af3b0ac59f6e9dab25718ef4eed9cbf2813ca)

## Related threats

- [Open5GS HTTP/2 SBI server memory exhaustion](https://junglewise.ai/threats/cve-2026-106806-a-memory-exhaustion-issue-exists-in-open5gs-v2-8-0-in-the-http-2)
- [Open5GS heap out-of-bounds write in multipart parsing](https://junglewise.ai/threats/cve-2026-116543-open5gs-1-3-0-through-2-8-0-contains-a-heap-out-of-bounds-write)
- [Open5GS assertion failure in SGSN context request handling](https://junglewise.ai/threats/cve-2026-108105-open5gs-through-2-8-0-contains-a-reachable-assertion)
- [Open5GS heap out-of-bounds read in PFCP parsing](https://junglewise.ai/threats/cve-2026-108103-open5gs-through-2-8-0-contains-a-heap-out-of-bounds-read)
- [Open5GS heap out-of-bounds read in PFCP parsing](https://junglewise.ai/threats/cve-2026-108102-open5gs-through-2-8-0-contains-a-heap-out-of-bounds-read)