HTTP Request Smuggling Affecting druid package, versions <37.0.0-r1
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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- published10 May 2026
- disclosed13 May 2026
Introduced: 10 May 2026
NewCVE-2026-42581 (opens in a new tab)How to fix?
Upgrade Wolfi druid to version 37.0.0-r1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream druid package and not the druid package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Content-Length, but only for HTTP/1.1 messages. The guard is absent for HTTP/1.0. An attacker that sends an HTTP/1.0 request with both headers causes Netty to decode the body as chunked while leaving Content-Length intact in the forwarded HttpMessage. Any downstream proxy or handler that trusts Content-Length over Transfer-Encoding will disagree on message boundaries, enabling request smuggling. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.