CVE-2026-18661 Eclipse Jetty - Broken Access Control

Eclipse Jetty jetty-annotations and jetty-eeN-annotations contain a broken access control caused by incorrect application of Jakarta Spec url-pattern rules when mixed @ServletSecurity and web.xml security-constraints exist, letting attackers bypass security constraints on some url-patterns, exploit requires specific web.xml configuration with multiple url-patterns.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/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
Published
15 October 2026
Updated
15 October 2026
Weakness
CWE-863

Vendor fix

Update to the latest version of jetty-annotations and jetty-eeN-annotations where this issue is fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs