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CVE Vulnerability Details :
CVE-2026-41643
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-07 May, 2026 | 11:53
Updated At-07 May, 2026 | 13:39
Rejected At-
▼CVE Numbering Authority (CNA)
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE

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
Vendor
osrg
Product
gobgp
Versions
Affected
  • < 4.3.0
Problem Types
TypeCWE IDDescription
CWECWE-129CWE-129: Improper Validation of Array Index
Type: CWE
CWE ID: CWE-129
Description: CWE-129: Improper Validation of Array Index
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
x_refsource_CONFIRM
https://github.com/osrg/gobgp/releases/tag/v4.3.0
x_refsource_MISC
Hyperlink: https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/osrg/gobgp/releases/tag/v4.3.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
exploit
Hyperlink: https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
Resource:
exploit
Details not found