Vulnerability details

CVE-2026-73117

Apache Software Foundation Apache Juneau

Apache Juneau: Response header CRLF injection and open redirect when applications set headers or redirect targets from request data

CVSS 4.0
10.0Critical

Official description

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().

CVSS scores

ScoreVersionSourceVector
10.0Critical 4.0 CVEProject cvelistV5 (CNA) (apache) 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

Affected products

VendorProductVersionsSource
Apache Software Foundation Apache Juneau v < 9.2.1 CVEProject cvelistV5 (CNA)

References and advisories

1
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Details

Published
2026-11-05
Last updated
2026-11-05
State
Published
Assigner (CNA)
apache
Kolun priority
25 · Low

Exploit prediction (EPSS)

0.44%
Probability of exploitation in 30 days
38.7%
Percentile (among all CVEs)

Weaknesses (CWE)

  • CWE-113
    Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')