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OpenAdvisories
Medium · 5.4 CVE-2026-55433 EUVD-2026-42148GHSA-jqj2-x4c5-jfxmGO-2026-5922

Coder: Devcontainer recreate endpoint missing write authorization allows read-only roles to destroy containers

Published Jul 8, 2026 · Updated Jul 8, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
coder coder >= 2.34.0, < 2.34.2, >= 2.33.0, < 2.33.8, >= 2.30.0, < 2.32.7, < 2.29.17 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/coder/coder all versions — GO-2026-5922
Go github.com/coder/coder/v2 >= 2.34.0, < 2.34.2 2.34.2 GHSA-jqj2-x4c5-jfxm
Go github.com/coder/coder/v2 >= 2.33.0, < 2.33.8 2.33.8 GHSA-jqj2-x4c5-jfxm
Go github.com/coder/coder/v2 >= 2.30.0, < 2.32.7 2.32.7 GHSA-jqj2-x4c5-jfxm
Go github.com/coder/coder/v2 < 2.29.17 2.29.17 GHSA-jqj2-x4c5-jfxm
Go github.com/coder/coder/v2 < 2.29.17 · >= 2.30.0, < 2.32.7 · >= 2.33.0, < 2.33.8 · >= 2.34.0, < 2.34.2 2.29.17, 2.32.7, 2.33.8, 2.34.2 GO-2026-5922

Advisories 1

References