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CVE-2026-55079

MEDIUM
4.9
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-55079
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-16 14:33 UTC
Published
2026-07-07 23:50 UTC
Last updated
2026-07-07 23:50 UTC
Primary CWE
CWE-789
CWE-789: Memory Allocation with Excessive Size Value
Vendor / Product
coder / coder
Sources
cve.org  ·  NVD

Severity & Metrics

4.9 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
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
Weakness (CWE)
CWESourceDescription
CWE-789 cna CWE-789: Memory Allocation with Excessive Size Value
CVSS scores (1)
ScoreSeverityVersionSourceVector
4.9 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
References (6)
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