{"id":"CVE-2026-55433","aliases":["GHSA-jqj2-x4c5-jfxm"],"title":"Coder: Devcontainer recreate endpoint missing write authorization allows read-only roles to destroy containers","summary":"Coder: Devcontainer recreate endpoint missing write authorization allows read-only roles to destroy containers","severity":"medium","cvss":5.4,"cwe":["CWE-862"],"vendor":"coder","product":"github.com/coder/coder/v2","ecosystem":"go","affected":["github.com/coder/coder/v2 >= 2.34.0, < 2.34.2","github.com/coder/coder/v2 >= 2.33.0, < 2.33.8","github.com/coder/coder/v2 >= 2.30.0, < 2.32.7","github.com/coder/coder/v2 < 2.29.17"],"patched":["github.com/coder/coder/v2 2.34.2","github.com/coder/coder/v2 2.33.8","github.com/coder/coder/v2 2.32.7","github.com/coder/coder/v2 2.29.17"],"published":"2026-07-06","updated":"2026-07-06","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-jqj2-x4c5-jfxm","references":[{"url":"https://github.com/coder/coder/security/advisories/GHSA-jqj2-x4c5-jfxm"},{"url":"https://github.com/coder/coder/pull/25812"},{"url":"https://github.com/advisories/GHSA-jqj2-x4c5-jfxm"}],"tags":["ghsa","go"],"ingestedAt":"2026-07-06T21:45:52.954Z","epss":0.00394,"epssPercentile":0.33307,"slug":"CVE-2026-55433","body":"## Overview\n\n### Summary\n\nThe devcontainer recreate endpoint relied on route middleware that checked only `ActionRead` on the workspace and, unlike the sibling delete endpoint, performed no `ActionUpdate` check before triggering the destructive rebuild.\n\n> **Note:** Exploitation requires an existing low-privilege role with access to the target workspace.\n\n### Impact\n\nAny authenticated principal with read-only workspace access, such as a Template Admin or Org Template Admin, could recreate a devcontainer, destroying uncommitted in-container state and, if called repeatedly, denying service. This is an authorization bypass leading to data loss and denial of service.\n\n### Patches\n\nThe fix adds an explicit `ActionUpdate` authorization check before the agent is dialed like the delete endpoint.\n\nThe fix was backported to all supported release lines:\n\n| Release line | Patched version |\n|---|---|\n| 2.34 | [v2.34.2](https://github.com/coder/coder/releases/tag/v2.34.2) |\n| 2.33 | [v2.33.8](https://github.com/coder/coder/releases/tag/v2.33.8) |\n| 2.32 | [v2.32.7](https://github.com/coder/coder/releases/tag/v2.32.7) |\n| 2.29 (ESR) | [v2.29.17](https://github.com/coder/coder/releases/tag/v2.29.17) |\n\n### Workarounds\n\nNone.\n\n### Resources\n\n- Fix: #25812\n\n### Credits\n\nCoder would like to thank Anthropic's Security Team (ANT-2026-22454) for independently disclosing this issue!\n\n## Affected packages\n\n- `github.com/coder/coder/v2 >= 2.34.0, < 2.34.2`\n- `github.com/coder/coder/v2 >= 2.33.0, < 2.33.8`\n- `github.com/coder/coder/v2 >= 2.30.0, < 2.32.7`\n- `github.com/coder/coder/v2 < 2.29.17`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/coder/coder/v2 2.34.2`\n- `github.com/coder/coder/v2 2.33.8`\n- `github.com/coder/coder/v2 2.32.7`\n- `github.com/coder/coder/v2 2.29.17`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}