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

Recipe IDio.moderne.recipe.cve202622732.FindHttpResponseContentLengthHeaderArtifactio.moderne.recipe:rewrite-cve-2026-22732

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.

Single recipeProprietary

Add to your build

Get a download tokenThis recipe is Moderne licensed, so the token must belong to a Moderne customer. It replaces YOUR_DOWNLOAD_TOKEN below.

~/.gradle/gradle.properties

codeGenomeUsername=you@example.com
codeGenomeToken=YOUR_DOWNLOAD_TOKEN

build.gradle.kts

plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("io.moderne.recipe.cve202622732.FindHttpResponseContentLengthHeader")
}

repositories {
    mavenCentral()
    maven {
        url = uri("https://artifacts.codegenomeproject.org/maven")
        credentials {
            username = providers.gradleProperty("codeGenomeUsername").get()
            password = providers.gradleProperty("codeGenomeToken").get()
        }
    }
}

dependencies {
    rewrite("io.moderne.recipe:rewrite-cve-2026-22732:0.3.0")
}

Then run

./gradlew rewriteRun

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe io.moderne.recipe.cve202622732.FindHttpResponseContentLengthHeader

If the recipe isn’t available locally, install it with:

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

Data tables

Structured output this recipe can produce.

  • Taint flowRecords taint flows from sources to sinks with their taint types.org.openrewrite.analysis.java.taint.table.TaintFlowTable
  • Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
  • Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
  • Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
  • Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats