CVE-2026-106806
UnknownSummary
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.
Risk Assessment
The vulnerability allows an unauthenticated remote attacker to cause denial of service by exhausting memory in an Open5GS network function. This can disrupt 5G network operations and affect service availability for users.
Recommendation
Update Open5GS to a patched version or restrict access to the HTTP/2 SBI server to trusted sources. Monitor memory usage of Open5GS processes to detect exploitation attempts early.
Other vulnerabilities in Open5GS
See all- CVE-2026-106807Unknown
A denial-of-service vulnerability exists in open5GS v2.8.0 in the PFCP transaction handling path. When the PFCP transaction or timer resource pool is exhausted, ogs_pfcp_xact_remote_create() returns NULL, leading to an ogs_assert(new) failure in ogs_pfcp_xact_receive() and termination of the network function process with SIGABRT.
- CVE-2026-108102Medium
Open5GS through 2.8.0 contains a heap out-of-bounds read vulnerability in ogs_pfcp_parse_volume_measurement() in lib/pfcp/types.c. A remote unauthenticated attacker can send a PFCP Session Report Request to the SMF on UDP port 8805 with a short, all-flags Volume Measurement IE, reading up to 48 bytes and potentially crashing the SMF.
- CVE-2026-92416Medium
A vulnerability has been found in Open5GS up to 2.8.0 in the function smf_n4_handle_session_report_request of the file src/smf/n4-handler.c of the PFCP Session Report Request Handler component. The manipulation leads to a reachable assertion, and the attack may be initiated remotely.
- CVE-2026-116544Low
Open5GS 2.6.1 through 2.8.0 contains an out-of-bounds read vulnerability in parse_scheme_output() in lib/sbi/conv.c during SUCI de-concealment due to incomplete length validation. Remote unauthenticated UEs or SBI peers can submit a crafted SUCI with a 42-byte scheme output to a UDM, triggering a heap over-read past the buffer.
- CVE-2026-116543High
Open5GS versions 1.3.0 through 2.8.0 contain a heap out-of-bounds write vulnerability in parse_multipart(). An unauthenticated attacker can corrupt memory by supplying an empty multipart boundary.
- CVE-2026-108105Medium
Open5GS through 2.8.0 contains a reachable assertion vulnerability in mme_gn_handle_sgsn_context_request() that allows remote unauthenticated attackers to crash the MME via malformed SGSN Address IEs. Attackers sending GTPv1-C traffic from a configured SGSN address with a known UE IMSI or P-TMSI can supply an invalid address length to terminate open5gs-mmed, denying service to all subscribers.
- CVE-2026-108103Medium
Open5GS through 2.8.0 contains a heap out-of-bounds read vulnerability in ogs_pfcp_parse_dropped_dl_traffic_threshold() that allows remote unauthenticated attackers to read past IE buffers via short IEs. Attackers can send PFCP Session Establishment or Modification Requests to the UPF on UDP port 8805 with DLPA and DLBY flags set, potentially crashing the UPF.
- CVE-2026-107166Medium
A weakness has been identified in Open5GS up to 2.7.7. This vulnerability affects the function ogs_pfcp_xact_local_create of the file src/upf/gtp-path.c of the component GTP-U Receive Path. This manipulation causes allocation of resources. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 9ffc252482d9b03ac01abcedbe95497ff4f95dd0. It is recommended to apply a patch to fix this issue.
- CVE-2026-92417Medium
A vulnerability was found in Open5GS up to 2.8.0 affecting the function ogs_pfcp_parse_volume_measurement in lib/pfcp/types.c of the PFCP Handler component. The manipulation results in a null pointer dereference. The attack may be launched remotely, and the patch is identified as 8f07b507b78ff94776f2cd49276eb116ed93d7f2.
- CVE-2026-91855Medium
A security flaw has been discovered in Open5GS up to 2.7.7 in the file lib/pfcp/handler.c of the PFCP Message Handler component. Manipulation leads to denial of service. Remote exploitation is possible, and the exploit has been publicly released. The patch is named 028e1dbb5e3271035ccee906ef417a97fc523f71.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS