CVE-2026-55433
mediumpriority · track · 0OT risk · elevatedEPSS 0.004 · 33 %ileEUUSEPSS · scored 2026-10-26
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, the 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. Exploitation requires an existing low-privilege role with access to the target workspace. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 adds an explicit `ActionUpdate` authorization check before the agent is dialed like the delete endpoint. No known workarounds are available.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (13)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-jqj2-x4c5-jfxmCoder: Devcontainer recreate endpoint missing write authorization allows read-only roles to destroy containers2026-07-06ghsa · osvUS
### Summary The 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. > **Note:** Exploitation requires an existing low-privilege role with access to the target workspace. ### Impact Any 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. ### Patches The fix adds an explicit `ActionUpdate` authorization check before the agent is dialed like the delete endpoint. The fix was backported to all supported release lines: | Release line | Patched version | |---|---| | 2.34 | [v2.34.2](https://github.com/coder/coder/releases/tag/v2.34.2) | | 2.33 | [v2.33.8](https://github.com/coder/coder/releases/tag/v2.33.8) | | 2.32 | [v2.32.7](https://github.com/coder/coder/releases/tag/v2.32.7) | | 2.29 (ESR) | [v2.29.17](https://github.com/coder/coder/releases/tag/v2.29.17) | ### Workarounds None. ### Resources - Fix: #25812 ### Credits Coder would like to thank Anthropic's Security Team (ANT-2026-22454) for independently disclosing this issue!
- GO-2026-5922Coder: Devcontainer recreate endpoint missing write authorization allows read-only roles to destroy containers in github.com/coder/coder2026-07-07vendor · osvUS
Coder: Devcontainer recreate endpoint missing write authorization allows read-only roles to destroy containers in github.com/coder/coder
also known as (5)
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sources
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references (19)
External citations — patches, advisories, analysis.
- https://github.com/coder/coder/pull/25812cnnvd
- https://github.com/coder/coder/releasesPatchcnnvd
- https://github.com/coder/coder/releases/tag/v2.29.17cnnvd
- https://github.com/coder/coder/releases/tag/v2.32.7cnnvd
- https://github.com/coder/coder/releases/tag/v2.33.8cnnvd
- https://github.com/coder/coder/releases/tag/v2.34.2cnnvd
- https://github.com/coder/coder/security/advisories/GHSA-jqj2-x4c5-jfxmcnnvd
- https://github.com/coder/coder/pull/25812enisa_euvd
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