Severity:
CVSS 4.0: 2.3 (low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/AU:N/RE:L
Affected versions:
- Apache Wicket (org.apache.wicket:wicket-core) 9.24.0
- Apache Wicket (org.apache.wicket:wicket-core) 10.10.0 through 10.11.0
Description:
Apache Wicket 10.10.0, 10.11.0 and 9.24.0 do not set the
Content-Security-Policy headers on a page whose render request handler is
wrapped in more than one IRequestHandlerDelegate. The framework unwraps only a
single delegate level when deciding whether a request renders a page, so with a
deeper chain, for example an application-provided delegating request mapper
combined with CryptoMapper, the page is served without any CSP header even
though CSP is enabled, and no error or warning is raised. The nonce-based
protection Wicket applies to inline scripts and styles, together with any other
CSP directives configured by the application, is thereby lost for those pages,
exposing them to content injection the policy was meant to prevent.
Applications on stock Wicket that do not wrap request handlers themselves are
not affected. Versions before 10.10.0 and 9.24.0 handled nested delegates
correctly. Users are recommended to upgrade to version 10.12.0 or 9.25.0, which
fix the issue.
Credit:
Hans Schäfer (finder)
References:
https://wicket.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-87718
