Auth bypass in Open5gs
CVE-2026-78158
A flaw has been found in Open5GS 2.8.0. This vulnerability affects unknown code of the component AMF UEContextReleaseRequest Path Handler. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Open5gs — versions 2.8.0
Weakness classification (CWE)
References
- vuldb.com/vuln/394541 (vdb-entry)
- vuldb.com/vuln/394541/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-78158 (third-party-advisory)
- vuldb.com/submit/883023 (third-party-advisory)
- github.com/open5gs/open5gs/security/advisories/GHSA-mg8r-2cvv-xq9j (related)
- github.com/open5gs/open5gs/ (product)
Frequently asked questions
- What is CVE-2026-78158?
- CVE-2026-78158 is a medium-severity vulnerability in Open5gs, classified under Incorrect Privilege Assignment. CVSS score: 6.3/10. Published 2026-08-24.
- How severe is CVE-2026-78158?
- Medium severity. CVSS v3 base score is 6.3 out of 10.