CVE-2026-49838

5.9 Moyenne

Publiée le 11/09/2026 à 00:16 · Modifiée le 16/09/2026 à 15:42 · Analyse NVD reportée · Source : security-advisories@github.com

Description

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.7.0, GoBGP accepts a zero-length AS_PATH during UPDATE decoding and later panics while validating that attribute for a confederation eBGP peer. The vulnerable path is in the BGP UPDATE validator: a malformed UPDATE that should be rejected as a malformed AS_PATH instead reaches an unchecked `p.Value[0]` access, allowing a configured confederation eBGP peer to trigger a denial of service. Version 4.7.0 patches the issue.

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Produits concernés

osrg gobgp

Scores CVSS

Version	Score	Source	Vecteur
3.1	5.9 Moyenne	security-advisories@github.com	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-129

Références

https://github.com/osrg/gobgp/commit/4a319a6c25630fb3cdbda3e9ccfe56e702bdaaa0
https://github.com/osrg/gobgp/security/advisories/GHSA-frrj-87jh-2772

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories