{"cve":"CVE-2026-39429","nvd":{"published":"2026-04-08T21:16:59.313","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.30.3 and 0.29.3, the cache server is directly exposed by the root shard and has no authentication or authorization in place. This allows anyone who can access the root shard to read and write to the cache server. This vulnerability is fixed in 0.30.3 and 0.29.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-302","CWE-862"],"references":["https://github.com/kcp-dev/kcp/releases/tag/v0.29.3","https://github.com/kcp-dev/kcp/releases/tag/v0.30.3","https://github.com/kcp-dev/kcp/security/advisories/GHSA-3j3q-wp9x-585p"],"products":["kcp:kcp"],"source":"nvd","synced_at":"2026-10-19T22:28:59.047572785+00:00"},"epss":{"cve":"CVE-2026-39429","score":0.00436,"percentile":0.37866,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-3j3q-wp9x-585p","url":"https://osv.dev/vulnerability/GHSA-3j3q-wp9x-585p","summary":"kcp's cache server is accessible without authentication or authorization checks","modified":"2026-09-10T03:50:42.424929037Z","packages":[{"ecosystem":"Go","name":"github.com/kcp-dev/kcp","purl":"pkg:golang/github.com/kcp-dev/kcp","ranges":[">=0.30.0 <0.30.3"],"fixed":["0.30.3"]},{"ecosystem":"Go","name":"github.com/kcp-dev/kcp","purl":"pkg:golang/github.com/kcp-dev/kcp","ranges":["<0.29.3"],"fixed":["0.29.3"]}]},{"id":"GO-2026-5088","url":"https://osv.dev/vulnerability/GO-2026-5088","summary":"kcp's cache server is accessible without authentication or authorization checks in github.com/kcp-dev/kcp","modified":"2026-07-16T21:10:54.281485498Z","packages":[{"ecosystem":"Go","name":"github.com/kcp-dev/kcp","purl":"pkg:golang/github.com/kcp-dev/kcp","ranges":["<0.29.3",">=0.30.0 <0.30.3"],"fixed":["0.29.3","0.30.3"]}]}],"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."]}