CVE-2026-8746
MEDIUMOpen5GS NRF nghttp2-server.c discover_handler use after free
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-364333 | Open5GS NRF nghttp2-server.c discover_handler use after free
https://vuldb.com/vuln/364333
Signature, Permissions Required signature
permissions-required
VDB-364333 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/364333/cti
Third Party Advisory third-party-advisory
Submit #817032 | Open5GS NRF v2.7.7 Denial of Service
https://vuldb.com/submit/817032
Exploit exploit
issue-tracking
https://github.com/open5gs/open5gs/issues/4476
Product product
https://github.com/open5gs/open5gs/
Scores
CVSS v3
4.3
EPSS
0.0005
EPSS Percentile
15.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-416
Status
published
Products (9)
None/Open5GS
2.7.0
None/Open5GS
2.7.1
None/Open5GS
2.7.2
None/Open5GS
2.7.3
None/Open5GS
2.7.4
None/Open5GS
2.7.5
None/Open5GS
2.7.6
None/Open5GS
2.7.7
open5gs/open5gs
< 2.7.7
Published
May 17, 2026
Tracked Since
May 17, 2026