CVE-2026-76983— Apache Wicket: XSS in AutoLabelTextResolver via FormComponent.setLabel
Quick assessment
Affected
Apache Software Foundation Apache Wicket
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache Wicket 中网页生成时输入未正确净化（Improper neutralization of input） 标签由 提供，默认注册在所有 中。该解析器将查找到的标签文本原样写入标记（markup），且完全不读取任何转义设置，因此标签中的内容会被当作标记进行渲染。 当标签文本来自所关联组件的标签模型（通过 设置）时，该文本会未经转义地写入标记。如果表单组件的标签中包含攻击者可以影响的数据，则应用程序受影响。Wicket 无法确定模型值的来源，因此该数据是来自 HTTP 请求还是来自存储，属于应用程序自
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I. Basic Information for CVE-2026-76983
Vulnerability Information
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Vulnerability Title
Apache Wicket: XSS in AutoLabelTextResolver via FormComponent.setLabel
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of input during web page generation in Apache Wicket.
The <wicket:label> tag is provided by org.apache.wicket.markup.html.form.AutoLabelTextResolver, which is registered by default in every WebApplication. The resolver writes the label it finds into the markup as it is, and reads no escaping setting at all, so markup in a label is rendered as markup.
When the label comes from the labelled component's label model, set through FormComponent#setLabel(IModel), it is written to the markup unescaped. An application is affected where the label of a form component holds data an attacker can influence. Wicket cannot determine where a model value comes from, so whether it reaches the page from a request or from storage is a property of the application.
There is no workaround. Unlike every other rendering path in Wicket, the resolver never consulted the escape-model-strings setting, so an application had no way to ask for the label to be escaped.
The body of a <wicket:label> tag is markup by design and is not affected; it remains the supported way to place markup in a label.
This issue affects Apache Wicket: from 8.0.0 through 8.18.0, from 9.0.0 through 9.23.0, from 10.0.0 through 10.10.0. Older, unsupported releases from 1.5.0 onwards are also affected. Users are recommended to upgrade to version 8.19.0, 9.24.0 or 10.11.0, which fix the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Wicket | 8.0.0 ~ 8.18.0 | - |
|
II. Public POCs for CVE-2026-76983
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|---|
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Other References for CVE-2026-76983 (1)
-
https://lists.apache.org/thread/lfc9s9qkgxhm8ffscp9b7gjfgj47g25h vendor-advisory
Same Patch Batch · Apache Software Foundation · 2026-08-31 · 8 CVEs total
| CVE-2026-58301 | 5.9 MEDIUM | Apache Shiro: Server-side POST request may be steered to an alternate host |
| CVE-2026-76984 | 5.1 MEDIUM | Apache Wicket: XSS in MetaDataHeaderItem via addTagAttribute |
| CVE-2026-76982 | 5.1 MEDIUM | Apache Wicket: XSS in Button via its model object |
| CVE-2026-75802 | 5.1 MEDIUM | Apache Wicket: XSS in AjaxEditableLabel and its subclasses via IChoiceRenderer and default |
| CVE-2026-71378 | Apache Wicket: Cross-Site Request Forgery (CSRF) protection bypass in ResourceIsolationReq | |
| CVE-2026-71257 | Apache Wicket: Configured file upload limits are not enforced when the multipart request h | |
| CVE-2026-70449 | Apache Wicket: Path traversal in resource style/variation/locale |
IV. Related Vulnerabilities
Same product: Apache Wicket
-
CVE-2026-76984
Apache Wicket: XSS in MetaDataHeaderItem via addTagAttribute -
CVE-2026-76982
Apache Wicket: XSS in Button via its model object -
CVE-2026-75802
Apache Wicket: XSS in AjaxEditableLabel and its subclasses v -
CVE-2026-71378
Apache Wicket: Cross-Site Request Forgery (CSRF) protection -
CVE-2026-71257
Apache Wicket: Configured file upload limits are not enforce
Same vendor: Apache Software Foundation
-
CVE-2026-76984
Apache Wicket: XSS in MetaDataHeaderItem via addTagAttribute -
CVE-2026-76982
Apache Wicket: XSS in Button via its model object -
CVE-2026-75802
Apache Wicket: XSS in AjaxEditableLabel and its subclasses v -
CVE-2026-71378
Apache Wicket: Cross-Site Request Forgery (CSRF) protection -
CVE-2026-71257
Apache Wicket: Configured file upload limits are not enforce
Same weakness: CWE-79
-
CVE-2026-76984
Apache Wicket: XSS in MetaDataHeaderItem via addTagAttribute -
CVE-2026-76982
Apache Wicket: XSS in Button via its model object -
CVE-2026-75802
Apache Wicket: XSS in AjaxEditableLabel and its subclasses v -
CVE-2026-82881
Aix-DB through 1.2.4 Stored Cross-Site Scripting via Markdow -
CVE-2026-82868
@pdfme/schemas before 5.5.9 Cross-Site Scripting via SVG
V. Comments for CVE-2026-76983
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