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Public proof of concept

CVE-2026-106806

A public proof of concept exists; no exploitation attested.

  • Published2026-11-02
  • WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A memory exhaustion issue exists in Open5GS v2.8.0 in the HTTP/2 SBI server. Repeated header names cause previously allocated header strings to be leaked, and HPACK compression allows an unauthenticated remote attacker to trigger tens of thousands of duplicate headers with a small request. Repeated crafted requests can cause persistent heap growth, exhaust process memory, and terminate the affected Open5GS network function, resulting in denial of service.

Timeline

dates in UTC
  1. 2026-11-02CVE publishedCNA

Versions per branch

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-106806 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-11-02
Last Modified
2026-11-05
NVD status
Deferred
GitHub Advisory
GHSA-c4rp-26v8-cm35

Frequently asked questions

What is CVE-2026-106806?

A memory exhaustion issue exists in Open5GS v2.8.0 in the HTTP/2 SBI server. Repeated header names cause previously allocated header strings to be leaked, and HPACK compression allows an unauthenticated remote attacker to trigger tens of thousands of duplicate headers with a small request. Repeated crafted requests can cause persistent heap growth, exhaust process memory, and terminate the affected Open5GS network function, resulting in denial of service.

Is CVE-2026-106806 actively exploited?

A proof-of-concept exploit exists for CVE-2026-106806, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-106806?

CVE-2026-106806 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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