CVE-2026-41643
Last modified
CVE-2026-41643 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Osrg | Gobgp | < 4.3.0 |
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
- https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2qExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-41643?
How severe is CVE-2026-41643?
How do I fix CVE-2026-41643?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-41636Uncontrolled Recursion vulnerability in Apache Thrift Node.j…7.5
- CVE-2026-41637In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, cli…3.7
- CVE-2026-4164A flaw has been found in Wavlink WL-WN578W2 221110. Impacted…9.8
- CVE-2026-41640NocoBase is an AI-powered no-code/low-code platform for buil…8.8
- CVE-2026-41641NocoBase is an AI-powered no-code/low-code platform for buil…7.2
- CVE-2026-41642GoBGP is an open source Border Gateway Protocol (BGP) implem…7.5
- CVE-2026-41644monetr is a budgeting application for recurring expenses. Pr…7.1
- CVE-2026-41645Nuclei is a vulnerability scanner built on a simple YAML-bas…5.3
- CVE-2026-41646Nuclei is a vulnerability scanner built on a simple YAML-bas…5.5
- CVE-2026-41647Incus is a system container and virtual machine manager. Pri…6.5
- CVE-2026-41648Incus is a system container and virtual machine manager. Pri…5
- CVE-2026-41649Outline is a service that allows for collaborative documenta…7.7
Are you affected by CVE-2026-41643?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST