{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77459", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-20T20:07:49.961Z", "datePublished": "2026-10-13T16:26:47.088Z", "dateUpdated": "2026-10-13T16:26:47.088Z"}, "containers": {"cna": {"title": "Argo CD: AppProject destination-namespace and resource restrictions bypassed by PreDelete/PostDelete resource hooks", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-fmxq-cgp8-87wp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-fmxq-cgp8-87wp"}, {"name": "https://github.com/argoproj/argo-cd/commit/1149cdc6e932208c4402183cc3d7b7485239940c", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/commit/1149cdc6e932208c4402183cc3d7b7485239940c"}, {"name": "https://github.com/argoproj/argo-cd/commit/4bc8085b0a6d2296b849539d3d09fc7be7a4a511", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/commit/4bc8085b0a6d2296b849539d3d09fc7be7a4a511"}, {"name": "https://github.com/argoproj/argo-cd/commit/7f0a05834b05103d69d7c150e1ee36541b314696", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/commit/7f0a05834b05103d69d7c150e1ee36541b314696"}, {"name": "https://github.com/argoproj/argo-cd/commit/d5dd7019ee65be8895133fe4df554e28074242c4", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/commit/d5dd7019ee65be8895133fe4df554e28074242c4"}, {"name": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.15", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.15"}, {"name": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.10", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.10"}, {"name": "https://github.com/argoproj/argo-cd/releases/tag/v3.5.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.5.4"}, {"name": "https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2", "tags": ["x_refsource_MISC"], "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2"}], "affected": [{"vendor": "argoproj", "product": "argo-cd", "versions": [{"version": ">= 2.10.0, <= 2.14.21", "status": "affected"}, {"version": ">= 3.0.0, < 3.3.15", "status": "affected"}, {"version": ">= 3.4.0, < 3.4.10", "status": "affected"}, {"version": ">= 3.5.0, < 3.5.4", "status": "affected"}, {"version": ">= 3.6.0-rc1, < 3.6.0-rc2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-13T16:26:47.088Z"}, "descriptions": [{"lang": "en", "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.10.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, Argo CD creates PostDelete resource hooks without applying the AppProject destination and resource authorization checks used during ordinary synchronization. The omitted checks include cluster-scoped and namespaced resource allow/deny lists. A user who can write to an Application's Git repository can commit a delete hook targeting a forbidden namespace, server, group, kind, or resource name, and deletion of the Application causes the application-controller to create that resource with its destination-cluster credentials. The reachable impact is bounded by the controller's cluster access but can include cluster-scoped resources, disallowed namespaces, persistent hook objects, and secondary objects created by a hook Job. PreSync, Sync, PostSync, and SyncFail hooks continue to use the normal project checks. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2."}], "source": {"advisory": "GHSA-fmxq-cgp8-87wp", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "argo-cd", "vendor": "argoproj", "versions": [{"status": "affected", "version": ">= 2.10.0, <= 2.14.21"}, {"status": "affected", "version": ">= 3.0.0, < 3.3.15"}, {"status": "affected", "version": ">= 3.4.0, < 3.4.10"}, {"status": "affected", "version": ">= 3.5.0, < 3.5.4"}, {"status": "affected", "version": ">= 3.6.0-rc1, < 3.6.0-rc2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.10.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, Argo CD creates PostDelete resource hooks without applying the AppProject destination and resource authorization checks used during ordinary synchronization. The omitted checks include cluster-scoped and namespaced resource allow/deny lists. A user who can write to an Application's Git repository can commit a delete hook targeting a forbidden namespace, server, group, kind, or resource name, and deletion of the Application causes the application-controller to create that resource with its destination-cluster credentials. The reachable impact is bounded by the controller's cluster access but can include cluster-scoped resources, disallowed namespaces, persistent hook objects, and secondary objects created by a hook Job. PreSync, Sync, PostSync, and SyncFail hooks continue to use the normal project checks. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2."}], "id": "CVE-2026-77459", "lastModified": "2026-10-13T17:17:46.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-13T17:17:46.050", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/commit/1149cdc6e932208c4402183cc3d7b7485239940c"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/commit/4bc8085b0a6d2296b849539d3d09fc7be7a4a511"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/commit/7f0a05834b05103d69d7c150e1ee36541b314696"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/commit/d5dd7019ee65be8895133fe4df554e28074242c4"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.15"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.10"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.5.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2"}, {"source": "security-advisories@github.com", "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-fmxq-cgp8-87wp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}