Allocation of Resources Without Limits or Throttling Affecting cowboy package, versions >=2.0.0 <2.15.0
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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Start learning- Snyk IDSNYK-HEX-COWBOY-16699556
- published15 May 2026
- disclosed13 May 2026
- creditPeter Ullrich
Introduced: 13 May 2026
NewCVE-2026-8466 (opens in a new tab)How to fix?
Upgrade cowboy to version 2.15.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to unbounded accumulation of data in the read_part function during multipart header parsing. An attacker can exhaust server memory by sending a multipart/form-data request that never completes the header section, causing the process to continually allocate memory.