CVE-2026-116543
Open5GS 1.3.0 through 2.8.0 Heap Out-of-Bounds Write via SBI Multipart Parser
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 26, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 26, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
open5gsopen5gs |
|
References
- GitHub Security Advisory (GHSA-25v2-v588-jq8g)vendor-advisory
- Patch Commitpatch
- https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/message.c#L3372technical-description
- https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/contrib/multipart_parser.c#L260technical-description
- https://github.com/open5gs/open5gsproduct
- VulnCheck Advisory: Open5GS 1.3.0 through 2.8.0 Heap Out-of-Bounds Write via SBI Multipart Parserthird-party-advisory
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