CVE-2026-8746

4.3 MEDIUM

A security flaw has been discovered in Open5GS up to 2.7.7

Published: 2026-05-17 · Last updated: 2026-05-18

Severity and scoring

CVSS: 4.3 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE: CWE-119, CWE-416

Affected products

Vendor	Product
open5gs	open5gs

Description

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-8746
[Other]https://github.com/open5gs/open5gs/
[Exploit reference]https://github.com/open5gs/open5gs/issues/4476
[Other]https://vuldb.com/submit/817032
[Other]https://vuldb.com/vuln/364333
[Other]https://vuldb.com/vuln/364333/cti
[Other]https://vuldb.com/submit/817032

Related CVEs

Same vendor

CVE-2026-8745 — A vulnerability was identified in Open5GS up to 2.7.7 (4.3 MEDIUM)
CVE-2026-8744 — A vulnerability was determined in Open5GS up to 2.7.7 (4.3 MEDIUM)
CVE-2026-8743 — A vulnerability was found in Open5GS up to 2.7.6 (6.3 MEDIUM)
CVE-2026-8731 — A vulnerability has been found in Open5GS up to 2.7.7 (4.3 MEDIUM)
CVE-2026-8730 — A flaw has been found in Open5GS up to 2.7.6 (4.3 MEDIUM)

Same CWE

CVE-2026-10640 — Zephyr's IPv6 Neighbor Discovery send paths (net_ipv6_send_na, net_ipv6_send_ns, net_ipv6_send_rs in subsys/net/ip/ipv6_nbr.c) updated th... (4.2 MEDIUM)
CVE-2026-10639 — In Zephyr's native IPv4 stack, icmpv4_handle_echo_request() in subsys/net/ip/icmpv4.c builds an echo-reply packet (reply), hands it to ne... (4.8 MEDIUM)
CVE-2026-10638 — subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data() (5.9 MEDIUM)
CVE-2026-10637 — subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully (5.9 MEDIUM)
CVE-2026-10636 — In Zephyr's IPv4 IGMP implementation, igmp_send() in subsys/net/ip/igmp.c read the network interface back out of the packet via net_pkt_i... (3.7 LOW)