GHSA-JF75-P25M-PW74

Vulnerability from github – Published: 2025-12-03 16:28 – Updated: 2025-12-04 16:22
VLAI
Summary
Coder logs sensitive objects unsanitized
Details

Summary

Workspace Agent manifests containing sensitive values were logged in plaintext unsanitized

Details

By default Workspace Agent logs are redirected to stderr https://github.com/coder/coder/blob/a8862be546f347c59201e2219d917e28121c0edb/cli/agent.go#L432-L439

Workspace Agent Manifests containing sensitive environment variables were logged insecurely https://github.com/coder/coder/blob/7beb95fd56d2f790502e236b64906f8eefb969bd/agent/agent.go#L1090

An attacker with limited local access to the Coder Workspace (VM, K8s Pod etc.) or a third-party system (SIEM, logging stack) could access those logs

This behavior opened room for unauthorized access and privilege escalation

Impact

Impact varies depending on the environment variables set in a given workspace

Patches

Fix was released & backported: - https://github.com/coder/coder/releases/tag/v2.28.4 - https://github.com/coder/coder/releases/tag/v2.27.7 - https://github.com/coder/coder/releases/tag/v2.26.5

Workarounds

One potential workaround is to disable Workspace Agent Logs by setting following configuration option CODER_AGENT_LOGGING_HUMAN=/dev/null

platform operators are advised to upgrade their deployments

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/coder/coder/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.26.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/coder/coder/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.27.0"
            },
            {
              "fixed": "2.27.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/coder/coder/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.28.0"
            },
            {
              "fixed": "2.28.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-66411"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-532"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-03T16:28:36Z",
    "nvd_published_at": "2025-12-03T20:16:26Z",
    "severity": "HIGH"
  },
  "details": "## Summary\nWorkspace Agent manifests containing sensitive values were logged in plaintext unsanitized\n\n## Details\nBy default Workspace Agent logs are redirected to [stderr](https://linux.die.net/man/3/stderr)\nhttps://github.com/coder/coder/blob/a8862be546f347c59201e2219d917e28121c0edb/cli/agent.go#L432-L439\n\n[Workspace Agent Manifests](https://coder.com/docs/reference/agent-api/schemas#agentsdkmanifest) containing sensitive environment variables were logged insecurely\nhttps://github.com/coder/coder/blob/7beb95fd56d2f790502e236b64906f8eefb969bd/agent/agent.go#L1090\n\nAn attacker with limited local access to the Coder Workspace (VM, K8s Pod etc.) or a third-party system ([SIEM](https://csrc.nist.gov/glossary/term/security_information_and_event_management_tool), logging stack) could access those logs\n\nThis behavior opened room for unauthorized access and privilege escalation\n\n## Impact\nImpact varies depending on the environment variables set in a given workspace\n\n## Patches\n[Fix](https://github.com/coder/coder/commit/e2a46393fce40bc630df3293c1ee66a596277289) was released \u0026 backported:\n- https://github.com/coder/coder/releases/tag/v2.28.4\n- https://github.com/coder/coder/releases/tag/v2.27.7\n- https://github.com/coder/coder/releases/tag/v2.26.5\n\n## Workarounds\nOne potential workaround is to disable Workspace Agent Logs by setting following configuration option\n`CODER_AGENT_LOGGING_HUMAN=/dev/null` \n\u003e platform operators are advised to upgrade their deployments",
  "id": "GHSA-jf75-p25m-pw74",
  "modified": "2025-12-04T16:22:37Z",
  "published": "2025-12-03T16:28:36Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/security/advisories/GHSA-jf75-p25m-pw74"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66411"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/pull/20968"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/commit/06c6abbe0935f9213c1588add60a396da5762e1c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/commit/a75205a559211c8aa494b1a16750d114b263f24a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/commit/e2a46393fce40bc630df3293c1ee66a596277289"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/coder/coder"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/releases/tag/v2.26.5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/releases/tag/v2.27.7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coder/coder/releases/tag/v2.28.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Coder logs sensitive objects unsanitized"
}


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