CVE-2026-73117 · Package
NO FIX YET · SEE WHAT TO DO
Apache Juneau's REST server passed response header values and redirect targets through without checking for CR/LF characters. An attacker can inject extra HTTP header lines or redirect users to an arbitrary external site when application code sets these values from request data.
first public Nov 5, 2026 · 1 source
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Exposure depends on application code. The framework does not build headers or redirects from request data, so applications that copy request input into response headers or redirect targets are the ones at risk. Applications that never do this can skip the immediate change, but upgrading to 9.2.1 is still the stated fix.
Not affected if no-request-data-in-headers, no-request-data-in-redirects
Who cares apache-juneau, java, rest-server
mvn dependency:tree | grep juneau, and confirm whether it is 9.2.0 or earliersendRedirect() using request parameters9.2.1sendRedirect() to Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability in Apache Juneau.
The Apache Juneau REST server passed response header values and redirect targets to the servlet container unchecked. An application that sets a response header or redirect target from request data could let a remote client inject header lines (where the servlet container does not itself reject CR/LF) or redirect users to an arbitrary external site. The framework itself does not build headers or redirects from request data; exposure depends on application code.
This issue affects Apache Juneau: through 9.2.0.
Users are recommended to upgrade to version 9.2.1, which fixes the issue. Header values are now sanitized by default; applications that build redirect targets from request data must also switch from sendRedirect() to the new sendSafeRedirect().
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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sendSafeRedirect()