CVE-2026-41643 (GCVE-0-2026-41643)

Vulnerability from cvelistv5 – Published: 2026-05-07 11:53 – Updated: 2026-05-07 13:39
VLAI
Title
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-07 13:38 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7631 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
osrg gobgp Affected: < 4.3.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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