CVE WatchJul 8, 2026

CVE-2026-55078

Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.17.0 and prior to versions 2.29

CVSS

6.5

Medium

EPSS

0.6%

p45

KEV

—

Exploit Today

0-100

Published: Jul 7, 2026 · Last modified: Jul 8, 2026 · CWE-409 · CWE-770

EPSS · 30d

0.6%EPSS · 30 days0.6%

2026-07-082026-07-17

Technical description

Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.17.0 and prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `POST /api/v2/files` converts zip uploads to tar in memory via `CreateTarFromZip`, which enforced a per-entry size limit but no aggregate limit on total decompressed output, writing to an unbounded in-memory buffer. Exploitation requires authenticated file-upload access and the impact is limited to availability (denial of service). The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 adds a metadata preflight check that sums projected entry sizes and a streaming writer that enforces the aggregate limit during decompression. As a workaround, restrict file-upload permissions to trusted users or place a reverse proxy with request-body size limits in front of `coderd`.

Official references

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