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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/osrg/gobgp/releases/tag/v4.4.0 Patch, Product
- https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px Exploit, Vendor Advisory
- https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · osrgNVD modified 2026-10-26 22:10
Affected (CPE criteria) 1
cpe:2.3:a:osrg:gobgp:4.3.0:*:*:*:*:*:*:*
References 3
- https://github.com/osrg/gobgp/releases/tag/v4.4.0 Patch, Product
- https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px Exploit, Vendor Advisory
- https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px Exploit, Vendor Advisory