CVE-2026-83594 Apache Wicket - Denial of Service

Apache Wicket 9.14.0 to 9.24.0 and 10.0.0 to 10.11.0 contain a denial of service caused by excessive memory allocation from unvalidated file size in FileUploadToResourceField callback, letting attackers exhaust server heap remotely without authentication, exploit requires calling UploadInfo#get().

CVSS base score 8.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/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
1 November 2026
Updated
3 November 2026
Weakness
CWE-789

Vendor fix

Upgrade to Apache Wicket 9.25.0 or 10.12.0 or later.

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

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