CVE Watch10 sept 2026

CVE-2026-49838

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.7.0, GoBGP accepts a

CVSS

5.9

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 10 sept 2026 · Última mod.: 10 sept 2026 · CWE-129

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

Referencias oficiales

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