FKIE_CVE-2026-46354
Vulnerability from fkie_nvd - Published: 2026-07-07 22:16 - Updated: 2026-07-08 19:47
Severity
Summary
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`.
References
{
"affected": [
{
"affectedData": [
{
"product": "coder",
"vendor": "coder",
"versions": [
{
"status": "affected",
"version": "\u003e= 2.33.0-rc.0, \u003c 2.33.3"
},
{
"status": "affected",
"version": "\u003e= 2.32.0-rc.0, \u003c 2.32.2"
},
{
"status": "affected",
"version": "\u003e= 2.31.0, \u003c 2.31.12"
},
{
"status": "affected",
"version": "\u003e= 2.30.0, \u003c 2.30.8"
},
{
"status": "affected",
"version": "\u003e= 2.29.0, \u003c 2.29.13"
},
{
"status": "affected",
"version": "\u003c 2.24.5"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
"matchCriteriaId": "38FD51E2-14DE-4C93-8EFC-267C222E06FE",
"versionEndExcluding": "2.24.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
"matchCriteriaId": "055001B5-79DC-4275-91EF-8D7C45FCA8ED",
"versionEndExcluding": "2.29.13",
"versionStartIncluding": "2.29.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
"matchCriteriaId": "7646D2AE-2363-4C43-853A-4F61C95B253B",
"versionEndExcluding": "2.30.8",
"versionStartIncluding": "2.30.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
"matchCriteriaId": "02976D4C-3CEB-430B-A464-141A28B2CBED",
"versionEndExcluding": "2.31.12",
"versionStartIncluding": "2.31.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
"matchCriteriaId": "4498D465-4F7F-4786-8716-43A78FBC35B8",
"versionEndExcluding": "2.32.2",
"versionStartIncluding": "2.32.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
"matchCriteriaId": "88AFFF26-1B74-4DD4-98C7-D5FE8F17CF00",
"versionEndExcluding": "2.33.3",
"versionStartIncluding": "2.33.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"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\":\"\u003ctarget\u003e\"}` and the forged `vmId` will be accepted returning the victim workspace agent\u0027s session token. No authentication is required. The attacker only needs to know a target VM\u0027s `vmId` which is a `UUIDv4`. That\u0027s 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`."
}
],
"id": "CVE-2026-46354",
"lastModified": "2026-07-08T19:47:02.427",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"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"
},
"exploitabilityScore": 3.9,
"impactScore": 5.2,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-46354",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-08T13:01:18.394796Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-07T22:16:52.467",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Issue Tracking",
"Patch"
],
"url": "https://github.com/coder/coder/pull/25286"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/coder/coder/releases/tag/v2.24.5"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/coder/coder/releases/tag/v2.29.13"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/coder/coder/releases/tag/v2.30.8"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/coder/coder/releases/tag/v2.31.12"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/coder/coder/releases/tag/v2.32.2"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/coder/coder/releases/tag/v2.33.3"
},
{
"source": "security-advisories@github.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://github.com/coder/coder/security/advisories/GHSA-6x44-w3xg-hqqf"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-347"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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