CVE-2026-84172: Apache Wicket · Files Accessible to External Parties
Affects wicket-coreSource GCVE Database
Not known to be exploited · CVSS 6.3 Medium · fixed in 8.20.0 : update wicket-core when convenient.
Data as of 2 Nov 2026, 01:00 UTC
Thin evidence
One scorer or none| CNA (apache) | CVSS 4.0 | 6.3 |
|---|
- Patch
- Available – fixed in 8.20.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 1 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Mavenorg.apache.wicket/wicket-corepkg:maven/org.apache.wicket/wicket-coreOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should upgrade Apache Wicket to versions 8.20.0, 9.25.0, or 10.12.0 or later, where this issue is fixed. Deployments using wicket-core in the standard WEB-INF/lib location are not affected. No other mitigation is required as the vulnerability is fixed in these versions.
Description
Apache Wicket versions 8.0.0 through 8.19.0, 9.0.0 through 9.24.0, and 10.0.0 through 10.11.0 have a vulnerability where developer-authored component markup template files can be accessed by external parties under certain class loader configurations. This occurs when wicket-core is loaded by a class loader that cannot see the application's component classes, causing the framework to incorrectly serve component markup templates as static resources. The exposure is read-only and limited to markup content, without access to user data or credentials. The issue is fixed in versions 8.20.0, 9.25.0, and 10.12.0.