Description
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled. This issue has been patched in version 4.3.0.
Affected products
osrg: gobgp
References3
- github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q ExploitVendor Advisory
- github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q ExploitVendor Advisory
- github.com/osrg/gobgp/releases/tag/v4.3.0 PatchRelease Notes
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: 46 · as of 13 November 2026
- CWE
- CWE-129
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