Description
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.
Affected products
osrg: gobgp
References3
- github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px ExploitVendor Advisory
- github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px ExploitVendor Advisory
- github.com/osrg/gobgp/releases/tag/v4.4.0 PatchProduct
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 44 · as of 13 November 2026
- CWE
- CWE-476
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