HTTP Request Smuggling Affecting capnproto package, versions [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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Test your applications- Snyk IDSNYK-CONAN-CAPNPROTO-15607378
- published15 Mar 2026
- disclosed12 Mar 2026
- creditHO9, HanJeouk
Introduced: 12 Mar 2026
NewCVE-2026-32239 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to HTTP Request Smuggling via the KJ-HTTP process. An attacker can cause the system to interpret a negative Content-Length value as an extremely large unsigned value by sending specially crafted HTTP requests or responses, potentially enabling HTTP request or response smuggling.