{"id":"CVE-2026-49823","state":"PUBLISHED","title":"Fission: Cross-namespace Package read via unvalidated PackageRef in Function admission webhook","description":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, a Fission Function spec carries three reference types — Secret, ConfigMap, and Package. The first two were namespace-validated by the admission webhook; PackageRef.Namespace was not. This issue has been patched in version 1.24.0.","publishedAt":"2026-06-10T17:23:23.682Z","updatedAt":"2026-06-10T19:38:29.382Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["fission fission"],"affected":[{"vendor":"fission","product":"fission","versions":[{"version":"< 1.24.0","status":"affected"}]}],"references":["https://github.com/fission/fission/security/advisories/GHSA-3r8v-2xmj-5c39","https://github.com/fission/fission/pull/3389","https://github.com/fission/fission/releases/tag/v1.24.0"],"weaknesses":["CWE-284","CWE-863"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49823.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49823","state":"PUBLISHED","datePublished":"2026-06-10T17:23:23.682Z","dateUpdated":"2026-06-10T19:38:29.382Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-01T18:50:36.055Z"},"containers":{"cna":{"title":"Fission: Cross-namespace Package read via unvalidated PackageRef in Function admission webhook","descriptions":[{"lang":"en","value":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, a Fission Function spec carries three reference types — Secret, ConfigMap, and Package. The first two were namespace-validated by the admission webhook; PackageRef.Namespace was not. This issue has been patched in version 1.24.0."}],"affected":[{"vendor":"fission","product":"fission","versions":[{"version":"< 1.24.0","status":"affected"}]}],"references":[{"url":"https://github.com/fission/fission/security/advisories/GHSA-3r8v-2xmj-5c39","name":"https://github.com/fission/fission/security/advisories/GHSA-3r8v-2xmj-5c39","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/fission/fission/pull/3389","name":"https://github.com/fission/fission/pull/3389","tags":["x_refsource_MISC"]},{"url":"https://github.com/fission/fission/releases/tag/v1.24.0","name":"https://github.com/fission/fission/releases/tag/v1.24.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"CWE-284: Improper Access Control","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-10T17:23:23.682Z"},"source":{"advisory":"GHSA-3r8v-2xmj-5c39","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-10T19:38:12.392016Z","id":"CVE-2026-49823","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-10T19:38:29.382Z"}}]}}}