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Find Content-Length header writes on HttpServletResponse (CVE-2026-22732)

io.moderne.recipe.cve202622732.FindHttpResponseContentLengthHeader

Detects `HttpServletResponse.setHeader`, `setIntHeader`, or `addIntHeader` calls whose first argument resolves (directly or via local variable) to the literal `Content-Length` (case-insensitive). These three overloads are NOT overridden by Spring Security's `OnCommittedResponseWrapper`, so `onResponseCommitted()` never fires and the lazy-added security headers (X-Frame-Options, X-Content-Type-Options, Cache-Control, etc.) are silently dropped — CVE-2026-22732. `addHeader` is intentionally excluded: the wrapper special-cases it. Also covers WebFlux `HttpHeaders.set` / `add` for `Content-Length`. In addition to marking Java sinks, attaches a {@code SearchResult} marker to every source file in the affected project so this recipe can be used as a declarative precondition for build-level recipes.

Recipe source​

This recipe is only available to users of Moderne.

This recipe is available under the Moderne Proprietary License.

Used by​

This recipe is used as part of the following composite recipes:

Usage​

This recipe has no required configuration options. Users of Moderne can run it via the Moderne CLI.

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell
mod run . --recipe FindHttpResponseContentLengthHeader

If the recipe is not available locally, then you can install it using:

mod config recipes jar install io.moderne.recipe:rewrite-cve-2026-22732:0.3.0

See how this recipe works across multiple open-source repositories​

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Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.

Data Tables​

Taint flow​

org.openrewrite.analysis.java.taint.table.TaintFlowTable

Records taint flows from sources to sinks with their taint types.

Column NameDescription
Source fileThe source file that the method call occurred in.
Source lineThe line number where the taint source is located.
SourceThe source code where taint originates.
Sink lineThe line number where the taint sink is located.
SinkThe sink code where taint flows to.
Taint typeThe taint type that matched at the sink.