CVE-2026-116543

EUVD-2026-109913
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 32.58%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
open5gsopen5gs
1.3.0 ≤
𝑥
≤ 2.8.0
CNA
Common Weakness Enumeration
References
https://github.com/open5gs/open5gs
https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/contrib/multipart_parser.c#L260
https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/message.c#L3372
https://github.com/open5gs/open5gs/commit/6820c2743b5b5e126e3755d2f92dae2b236732df
https://github.com/open5gs/open5gs/security/advisories/GHSA-25v2-v588-jq8g
https://www.vulncheck.com/advisories/open5gs-1.3.0-through-2.8.0-heap-out-of-bounds-write-via-sbi-multipart-parser