High 7.5Published May 7, 2026

CVE-2026-41643GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language.

Updated under an hour ago (2026-10-19 08:23 UTC)

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Every CVE for osrg gobgp

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-129
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

osrg gobgp osrg:gobgp	before 4.3.0	NVD

References

https://github.com/osrg/gobgp/releases/tag/v4.3.0patch, release-notes
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2qexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.