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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是美国Apache基金会的一款Java Web应用开发框架。 Apache Wicket 8.0.0版本至8.18.0版本、9.0.0版本至9.23.0版本和10.0.0版本至10.10.0版本存在跨站脚本漏洞，该漏洞源于AutoLabelTextResolver处理wicket:label标签时未对标签内容进行转义，可能导致跨站脚本攻击。

CVSS 5.1 · Medium EPSS 0.51% · P42

Affected Version Matrix 3

VendorProduct Version RangeStatus
Apache Software Foundation Apache Wicket 8.0.0≤ 8.18.0 affected
9.0.0≤ 9.23.0 affected
10.0.0≤ 10.10.0 affected
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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
Vulnerability Title
Apache Wicket 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Wicket是美国Apache基金会的一款Java Web应用开发框架。 Apache Wicket 8.0.0版本至8.18.0版本、9.0.0版本至9.23.0版本和10.0.0版本至10.10.0版本存在跨站脚本漏洞，该漏洞源于AutoLabelTextResolver处理wicket:label标签时未对标签内容进行转义，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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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III. Intelligence Information for CVE-2026-76983

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Mailing List Discussions for CVE-2026-76983 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-31 · 10 CVEs total

CVE-2026-58301 5.9 MEDIUM Apache Shiro: Server-side POST request may be steered to an alternate host
CVE-2026-76985 5.1 MEDIUM Apache Wicket: XSS in Palette via getAdditionalAttributes
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-2026-76986 Apache Wicket: XSS in AbstractSingleSelectChoice via getNullValidDisplayValue
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
Same vendor: Apache Software Foundation
Same weakness: CWE-79

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