CVE•Published 2026-05-07•Modified 2026-05-07•0 articles on news•6 live references•NVD data

CVE-2026-41643Osrg · Gobgp

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-129Improper Validation of Array Index

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.

Timeline

Published 2026-05-07

Modified 2026-05-07

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-41643

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Osrg Gobgp"

All exposed Osrg Gobgp instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Gobgp"

HTTP body or banner mentions "Gobgp" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-41643