CVE-2026-73099: critical vulnerability in Apache Juneau
Apache Juneau: Cross-site request forgery via default-enabled content query-parameter body override
Published
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 10epss 0.2%
Cross-Site Request Forgery (CSRF) vulnerability in Apache Juneau.
The REST server accepts a "content" query parameter that replaces the request body, and this is enabled by default on every HTTP method, including GET. A cross-site link can therefore deliver an attacker-chosen request body to an endpoint without a CORS preflight, defeating protections that rely on the HTTP method or content type instead of an anti-CSRF token.
This issue affects Apache Juneau: through 9.2.0.
Users are recommended to upgrade to version 9.2.1, which fixes the issue. Applications that do not use the content parameter can also set disableContentParam to true.
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
Apache Software Foundation · Apache JuneauRelated CVEs — Apache Juneau
In the same product, most dangerous first.
CVE-2026-121489CRITICALApache Juneau: Path traversal in DirectoryResource allows reading files outside the configured root directoryEPSS 0.5%CVE-2026-73098CRITICALApache Juneau: Unsafe reflection allows attacker-controlled class initialization during parsingEPSS 0.5%CVE-2026-96677CRITICALApache Juneau: Cross-site scripting via unescaped request variables in HTML-doc chromeEPSS 0.4%CVE-2026-73117CRITICALApache Juneau: Response header CRLF injection and open redirect when applications set headers or redirect targets from request dataEPSS 0.4%CVE-2026-73101CRITICALApache Juneau: Internal exception class and message disclosed via error response header and body regardless of secure defaultsEPSS 0.4%CVE-2026-73100CRITICALApache Juneau: Sensitive request headers logged in cleartext by the default request logger on server errorsEPSS 0.4%