Memory Allocation with Excessive Size Value Affecting github.com/coder/coder/v2/coderd/provisionerdserver package, versions >=2.24.0 <2.29.17>=2.30.0 <2.32.7>=2.33.0 <2.33.8>=2.34.0 <2.34.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMCODERCODERV2CODERDPROVISIONERDSERVER-17872148
- published6 Jul 2026
- disclosed6 Jul 2026
- creditUnknown
Introduced: 6 Jul 2026
CVE-2026-55079 Â (opens in a new tab)How to fix?
Upgrade github.com/coder/coder/v2/coderd/provisionerdserver to version 2.29.17, 2.32.7, 2.33.8, 2.34.2 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value via the NewDataBuilder process in provisionersdk/proto/dataupload.go when allocating memory based on a client-supplied FileSize value without an upper-bound check. An attacker can cause the service to terminate unexpectedly by sending a specially crafted message with an excessively large FileSize, leading to an out-of-memory condition.
Workaround
This vulnerability can be mitigated by restricting access to the provisioner daemon serve endpoint to trusted provisioner daemon service accounts.