CVE-2026-88808

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88808", "assignerOrgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "state": "PUBLISHED", "assignerShortName": "suse", "dateReserved": "2026-09-10T08:35:07.010Z", "datePublished": "2026-09-28T15:36:13.506Z", "dateUpdated": "2026-09-29T03:55:24.347Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "shortName": "suse", "dateUpdated": "2026-09-28T15:36:13.506Z"}, "title": "Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters", "datePublic": "2026-09-28T15:21:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-250", "description": "CWE-250 Execution with unnecessary privileges", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-180", "descriptions": [{"lang": "en", "value": "CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels"}]}], "affected": [{"vendor": "SUSE", "product": "Rancher", "packageName": "Fleet", "repo": "https://github.com/rancher/fleet/", "versions": [{"status": "affected", "version": "0.16.0", "lessThan": "0.16.2", "versionType": "semver"}, {"status": "affected", "version": "0.15.0", "lessThan": "0.15.7", "versionType": "semver"}, {"status": "affected", "version": "0.14.0", "lessThan": "0.14.11", "versionType": "semver"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.16.0", "versionEndExcluding": "0.16.2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.15.0", "versionEndExcluding": "0.15.7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.14.0", "versionEndExcluding": "0.14.11"}]}]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files.\n\nThis issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div>A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files.</div><div>This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.</div>"}]}], "references": [{"url": "https://github.com/rancher/fleet/security/advisories/GHSA-q9v4-358v-r8q5", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "credits": [{"lang": "en", "value": "g.mygenie@gmail.com", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-28T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-88808"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-29T03:55:24.347Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-88808", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-28T17:51:32.072387Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-28T17:51:40.393Z"}}], "cna": {"title": "Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "g.mygenie@gmail.com"}], "impacts": [{"capecId": "CAPEC-180", "descriptions": [{"lang": "en", "value": "CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/rancher/fleet/", "vendor": "SUSE", "product": "Rancher", "versions": [{"status": "affected", "version": "0.16.0", "lessThan": "0.16.2", "versionType": "semver"}, {"status": "affected", "version": "0.15.0", "lessThan": "0.15.7", "versionType": "semver"}, {"status": "affected", "version": "0.14.0", "lessThan": "0.14.11", "versionType": "semver"}], "packageName": "Fleet", "defaultStatus": "unaffected"}], "datePublic": "2026-09-28T15:21:00.000Z", "references": [{"url": "https://github.com/rancher/fleet/security/advisories/GHSA-q9v4-358v-r8q5", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.5"}, "descriptions": [{"lang": "en", "value": "A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files.\n\nThis issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.", "supportingMedia": [{"type": "text/html", "value": "<div>A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files.</div><div>This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.</div>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-250", "description": "CWE-250 Execution with unnecessary privileges"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "0.16.2", "versionStartIncluding": "0.16.0"}, {"criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "0.15.7", "versionStartIncluding": "0.15.0"}, {"criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "0.14.11", "versionStartIncluding": "0.14.0"}], "operator": "OR"}], "operator": "OR"}], "providerMetadata": {"orgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "shortName": "suse", "dateUpdated": "2026-09-28T15:36:13.506Z"}}}, "cveMetadata": {"cveId": "CVE-2026-88808", "state": "PUBLISHED", "dateUpdated": "2026-09-29T03:55:24.347Z", "dateReserved": "2026-09-10T08:35:07.010Z", "assignerOrgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "datePublished": "2026-09-28T15:36:13.506Z", "assignerShortName": "suse"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "Fleet", "product": "Rancher", "repo": "https://github.com/rancher/fleet/", "vendor": "SUSE", "versions": [{"lessThan": "0.16.2", "status": "affected", "version": "0.16.0", "versionType": "semver"}, {"lessThan": "0.15.7", "status": "affected", "version": "0.15.0", "versionType": "semver"}, {"lessThan": "0.14.11", "status": "affected", "version": "0.14.0", "versionType": "semver"}]}], "source": "meissner@suse.de"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*", "matchCriteriaId": "C5143457-F2CD-4F48-BAD8-13A33A262112", "versionEndExcluding": "0.14.11", "versionStartIncluding": "0.14.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*", "matchCriteriaId": "7207500A-074F-4806-B754-12208EA6E30F", "versionEndExcluding": "0.15.7", "versionStartIncluding": "0.15.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*", "matchCriteriaId": "CB9E92F7-C809-408F-9689-943D5B0BF626", "versionEndExcluding": "0.16.2", "versionStartIncluding": "0.16.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files.\n\nThis issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11."}], "id": "CVE-2026-88808", "lastModified": "2026-10-07T17:00:32.977", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "meissner@suse.de", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-88808", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-28T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-09-28T16:17:16.150", "references": [{"source": "meissner@suse.de", "tags": ["Vendor Advisory"], "url": "https://github.com/rancher/fleet/security/advisories/GHSA-q9v4-358v-r8q5"}], "sourceIdentifier": "meissner@suse.de", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-250"}], "source": "meissner@suse.de", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.16.0,0.16.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.15.0,0.15.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.14.0,0.14.11)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Rancher", "source": "cna", "vendor": "SUSE"}, "product": "rancher", "vendor": "suse"}], "created": "2026-09-28T17:45:04.030286+00:00", "updated": "2026-09-28T18:15:04.642882+00:00", "vendors": ["suse", "suse$PRODUCT$rancher"]}