CVE-2026-116543

HIGH

Open5GS 1.3.0 through 2.8.0 contains a heap out-of-bounds write vulnerability in parse_multipart() that allows unauthenticated attackers to corrupt memory by supplying an empty multipart boundary. Attackers can send a single crafted multipart/related request to the SBI interface of any network function, overflowing the lookbehind buffer and crashing it.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 10/26/2026Modified: 10/26/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-116543 — Open5GS 1.3.0 through 2.8.0 contains a heap out-of-bounds write vulnerability in...

Open5GS 1.3.0 through 2.8.0 contains a heap out-of-bounds write vulnerability in parse_multipart() that allows unauthenticated attackers to corrupt memory by supplying an empty multipart boundary. Attackers can send a single crafted multipart/related request to the SBI interface of any network function, overflowing the lookbehind buffer and crashing it.

CVE-2026-116543
NIST NVD

References (6)

https://github.com/open5gs/open5gshttps://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/contrib/multipart_parser.c#L260https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/message.c#L3372https://github.com/open5gs/open5gs/commit/6820c2743b5b5e126e3755d2f92dae2b236732dfhttps://github.com/open5gs/open5gs/security/advisories/GHSA-25v2-v588-jq8ghttps://www.vulncheck.com/advisories/open5gs-1.3.0-through-2.8.0-heap-out-of-bounds-write-via-sbi-multipart-parser