{"cve":"CVE-2026-54247","nvd":{"published":"2026-09-14T20:16:45.843","modified":"2026-09-16T17:17:20.600","status":"Deferred","description":"Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.26.22, Handler in dataclients/kubernetes/admission/admission.go passes the body of requests to the Kubernetes admission endpoint at :9443/admission directly to io.ReadAll(r.Body) without a size limit. An attacker with in-cluster network access and a valid Kubernetes client certificate can send a very large body that causes unbounded memory allocation and an out-of-memory termination of the Skipper process. The disruption is limited to Ingress and RouteGroup admission rather than pod creation or unrelated admission controllers, and Kubernetes normally restarts the process. This issue is fixed in version 0.26.22.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","score":4.3},"cwes":["CWE-770"],"references":["https://github.com/zalando/skipper/commit/c3d156c6caaefecc9a46774c0f9c3c70b97160b4","https://github.com/zalando/skipper/pull/4053","https://github.com/zalando/skipper/releases/tag/v0.26.22","https://github.com/zalando/skipper/security/advisories/GHSA-cwxq-rc9x-2jvv"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-54247","score":0.00298,"percentile":0.2253,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cwxq-rc9x-2jvv","url":"https://osv.dev/vulnerability/GHSA-cwxq-rc9x-2jvv","summary":"Skipper: Unbounded Request Body Read in Admission Webhook Causes Memory Exhaustion DoS","modified":"2026-07-22T21:11:38.815125613Z","packages":[{"ecosystem":"Go","name":"github.com/zalando/skipper","purl":"pkg:golang/github.com/zalando/skipper","ranges":["<0.26.22"],"fixed":["0.26.22"]}]},{"id":"GO-2026-6015","url":"https://osv.dev/vulnerability/GO-2026-6015","summary":"Skipper: Unbounded Request Body Read in Admission Webhook Causes Memory Exhaustion DoS in github.com/zalando/skipper","modified":"2026-07-22T21:00:25.574217029Z","packages":[{"ecosystem":"Go","name":"github.com/zalando/skipper","purl":"pkg:golang/github.com/zalando/skipper","ranges":["<0.26.22"],"fixed":["0.26.22"]}]}],"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."]}