{"cve":"CVE-2026-50570","nvd":{"published":"2026-06-10T18:17:13.623","modified":"2026-06-17T10:57:43.453","status":"Deferred","description":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, Fission added PodSpec safety validation for tenant-facing Environment and Function CRDs (ValidatePodSpecSafety / ValidateContainerSafety admission webhook + sanitizeContainerSecurityContext executor merge layer), but the capability check was implemented as a fixed denylist of six Linux capabilities (SYS_ADMIN, NET_ADMIN, SYS_PTRACE, SYS_MODULE, DAC_READ_SEARCH, DAC_OVERRIDE). The denylist omitted CAP_SYS_TIME, among others. As a result, a tenant who could create a Function or Environment CRD could request securityContext.capabilities.add: [\"SYS_TIME\"], pass Fission's admission validation and merge-layer sanitization, and run attacker-controlled code with CAP_SYS_TIME in the resulting function or runtime container. This issue has been patched in version 1.25.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L","score":8.5},"cwes":["CWE-269","CWE-732"],"references":["https://github.com/fission/fission/pull/3465","https://github.com/fission/fission/releases/tag/v1.25.0","https://github.com/fission/fission/security/advisories/GHSA-qf5v-m7p4-95rp"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-50570","score":0.00274,"percentile":0.19814,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qf5v-m7p4-95rp","url":"https://osv.dev/vulnerability/GHSA-qf5v-m7p4-95rp","summary":"Fission: Incomplete capability denylist in Environment/Function PodSpec validation allows tenant-added CAP_SYS_TIME and cross-tenant node wall-clock corruption","modified":"2026-08-18T15:10:57.855060560Z","packages":[{"ecosystem":"Go","name":"github.com/fission/fission","purl":"pkg:golang/github.com/fission/fission","ranges":["<1.25.0"],"fixed":["1.25.0"]}]},{"id":"GO-2026-6129","url":"https://osv.dev/vulnerability/GO-2026-6129","summary":"Fission: Incomplete capability denylist in Environment/Function PodSpec validation allows tenant-added CAP_SYS_TIME and cross-tenant node wall-clock corruption in github.com/fission/fission","modified":"2026-08-18T15:00:21.336827694Z","packages":[{"ecosystem":"Go","name":"github.com/fission/fission","purl":"pkg:golang/github.com/fission/fission","ranges":["<1.25.0"],"fixed":["1.25.0"]}]}],"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."]}