{"id":"CVE-2026-28798","state":"PUBLISHED","title":"Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS","description":"ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. Prior to version 1.5.3, a proxy endpoint (/v1/sys/proxy) exposed by ZimaOS's web interface can be abused (via an externally reachable domain using a Cloudflare Tunnel) to make requests to internal localhost services. This results in unauthenticated access to internal-only endpoints and sensitive local services when the product is reachable from the Internet through a Cloudflare Tunnel. This issue has been patched in version 1.5.3.","publishedAt":"2026-04-03T20:00:48.045Z","updatedAt":"2026-04-06T15:42:48.777Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["IceWhaleTech ZimaOS"],"affected":[{"vendor":"IceWhaleTech","product":"ZimaOS","versions":[{"version":"< 1.5.3","status":"affected"}]}],"references":["https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8m","https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/28xxx/CVE-2026-28798.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28798","state":"PUBLISHED","datePublished":"2026-04-03T20:00:48.045Z","dateUpdated":"2026-04-06T15:42:48.777Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-03T14:25:19.245Z"},"containers":{"cna":{"title":"Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS","descriptions":[{"lang":"en","value":"ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. Prior to version 1.5.3, a proxy endpoint (/v1/sys/proxy) exposed by ZimaOS's web interface can be abused (via an externally reachable domain using a Cloudflare Tunnel) to make requests to internal localhost services. This results in unauthenticated access to internal-only endpoints and sensitive local services when the product is reachable from the Internet through a Cloudflare Tunnel. This issue has been patched in version 1.5.3."}],"affected":[{"vendor":"IceWhaleTech","product":"ZimaOS","versions":[{"version":"< 1.5.3","status":"affected"}]}],"references":[{"url":"https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8m","name":"https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3","name":"https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-03T20:00:48.045Z"},"source":{"advisory":"GHSA-vqqj-f979-8c8m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-06T15:40:06.830577Z","id":"CVE-2026-28798","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-06T15:42:48.777Z"}}]}}}