CVE-2026-28368High· 8.7▾ TwilightA flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretati…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 47.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 4.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.7%
Last analysed / modified upstream
A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.
build_of_apache_camel_-_hawtio = 4.0build_of_apache_camel_for_spring_boot = 4.0data_grid = 8.0fuse = 7.0.0jboss_enterprise_application_platform = 7.0.0jboss_enterprise_application_platform = 8.0.0jboss_enterprise_application_platform_expansion_packprocess_automation = 7.0single_sign-on = 7.0undertowenterprise_linux = 9.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-28369High· 8.7A flaw was found in Undertow
CVE-2026-28367High· 8.7A flaw was found in Undertow
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