{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46354","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-13T18:37:30.991Z","datePublished":"2026-07-07T21:10:01.899Z","dateUpdated":"2026-07-08T13:01:25.192Z"},"containers":{"cna":{"title":"Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft","problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/coder/coder/security/advisories/GHSA-6x44-w3xg-hqqf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coder/coder/security/advisories/GHSA-6x44-w3xg-hqqf"},{"name":"https://github.com/coder/coder/pull/25286","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/pull/25286"},{"name":"https://github.com/coder/coder/releases/tag/v2.24.5","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.24.5"},{"name":"https://github.com/coder/coder/releases/tag/v2.29.13","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.29.13"},{"name":"https://github.com/coder/coder/releases/tag/v2.30.8","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.30.8"},{"name":"https://github.com/coder/coder/releases/tag/v2.31.12","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.31.12"},{"name":"https://github.com/coder/coder/releases/tag/v2.32.2","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.32.2"},{"name":"https://github.com/coder/coder/releases/tag/v2.33.3","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.33.3"}],"affected":[{"vendor":"coder","product":"coder","versions":[{"version":">= 2.33.0-rc.0, < 2.33.3","status":"affected"},{"version":">= 2.32.0-rc.0, < 2.32.2","status":"affected"},{"version":">= 2.31.0, < 2.31.12","status":"affected"},{"version":">= 2.30.0, < 2.30.8","status":"affected"},{"version":">= 2.29.0, < 2.29.13","status":"affected"},{"version":"< 2.24.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-07T21:10:01.899Z"},"descriptions":[{"lang":"en","value":"Coder allows organizations to provision remote development environments via Terraform. In versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3, `azureidentity.Validate()` verifies that the PKCS#7 signer certificate chains to a trusted Azure CA but never verifies the PKCS#7 signature itself. An attacker can embed a legitimate Azure certificate alongside arbitrary content e.g. `{\"vmId\":\"<target>\"}` and the forged `vmId` will be accepted returning the victim workspace agent's session token. No authentication is required. The attacker only needs to know a target VM's `vmId` which is a `UUIDv4`. That's a practical limitation which would typically require prior access to be exploited. Versions 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 patch the issue. As a workaround, reconfigure any Azure templates to use token authentication rather than `azure-instance-identity`."}],"source":{"advisory":"GHSA-6x44-w3xg-hqqf","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T13:01:18.394796Z","id":"CVE-2026-46354","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-08T13:01:25.192Z"}}]}}