Description
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.24.0 and prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `NewDataBuilder` in `provisionersdk/proto/dataupload.go` allocated a byte slice using the client-supplied `FileSize` from a `DataUpload` message without an upper-bound check. Although the DRPC wire limit is 4 MiB, the `FileSize` value itself was unconstrained. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validates `FileSize` against an upper bound (`MaxFileSize = 100 MiB`) before allocation. As a workaround, restrict access to the provisioner daemon serve endpoint to trusted provisioner daemon service accounts.
Severity (CVSS)
| Base score | 4.9 |
|---|---|
| Severity | Medium |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| Provided by | CNA |
Weaknesses
- CWE-789 — CWE-789: Memory Allocation with Excessive Size Value
Affected products
| Vendor | Product | Versions |
|---|---|---|
| coder | coder | >= 2.34.0, < 2.34.2; >= 2.33.0, < 2.33.8; >= 2.30.0, < 2.32.7; >= 2.24.0, < 2.29.17 |
References
- https://github.com/coder/coder/security/advisories/GHSA-f962-qm93-mj4c (x_refsource_CONFIRM)
- https://github.com/coder/coder/pull/25710 (x_refsource_MISC)
- https://github.com/coder/coder/releases/tag/v2.29.17 (x_refsource_MISC)
- https://github.com/coder/coder/releases/tag/v2.32.7 (x_refsource_MISC)
- https://github.com/coder/coder/releases/tag/v2.33.8 (x_refsource_MISC)
- https://github.com/coder/coder/releases/tag/v2.34.2 (x_refsource_MISC)
Generated from the official CVE List on 08 Jul 2026 07:00 UTC.