CVE-2026-82840 Apache Wicket - Authentication Bypass

Apache Wicket 8.18.0-8.19.0, 9.23.0-9.24.0, and 10.9.0-10.11.0 contain a session fixation vulnerability caused by failure to renew session ID on re-authentication in AuthenticatedWebSession, letting attackers fixate sessions, exploit requires attacker to plant a session ID in victim's browser.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/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
1 November 2026
Updated
3 November 2026
Weakness
CWE-384

Vendor fix

Upgrade to Apache Wicket versions 8.20.0, 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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