{"cve":"CVE-2026-41643","nvd":{"published":"2026-05-07T12:16:17.623","modified":"2026-10-26T21:10:00.170","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-129"],"references":["https://github.com/osrg/gobgp/releases/tag/v4.3.0","https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q","https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q"],"products":["osrg:gobgp"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-41643","score":0.00542,"percentile":0.45321,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-8rxh-r2p6-7f2q","url":"https://osv.dev/vulnerability/GHSA-8rxh-r2p6-7f2q","summary":"GoBGP has Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE","modified":"2026-07-24T19:11:49.957746610Z","packages":[{"ecosystem":"Go","name":"github.com/osrg/gobgp/v4","purl":"pkg:golang/github.com/osrg/gobgp/v4","ranges":["<4.3.0"],"fixed":["4.3.0"]}]},{"id":"GO-2026-5266","url":"https://osv.dev/vulnerability/GO-2026-5266","summary":"GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE in github.com/osrg/gobgp","modified":"2026-07-24T19:00:21.610411877Z","packages":[{"ecosystem":"Go","name":"github.com/osrg/gobgp/v4","purl":"pkg:golang/github.com/osrg/gobgp/v4","ranges":["<4.3.0"],"fixed":["4.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}