{"id":"CVE-2026-42285","sourceIdentifier":"security-advisories@github.com","published":"2026-05-07T12:16:18.180","lastModified":"2026-06-17T10:47:38.070","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a \"withdraw\" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to crash, resulting in a complete loss of service availability. This issue has been patched in version 4.5.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"osrg","product":"gobgp","versions":[{"version":"= 4.4.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-07T13:04:33.585849Z","id":"CVE-2026-42285","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:osrg:gobgp:4.4.0:*:*:*:*:*:*:*","matchCriteriaId":"6EF1E97F-CA8A-45E6-B115-E9BD4EC8B36F"}]}]}],"references":[{"url":"https://github.com/osrg/gobgp/releases/tag/v4.5.0","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}