CVE-2026-8746
Open5GS NRF nghttp2-server.c discover_handler use after free
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
17 May 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A security flaw has been discovered in Open5GS up to 2.7.7. Affected by this issue is the function discover_handler in the library /lib/sbi/nghttp2-server.c of the component NRF. The manipulation results in use after free. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
n/a · Open5GSpublic PoCs found — 1
cve_referencegithub.com/open5gs/open5gs/issues/4476unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.