CVE-2026-76986Hinoki check available

Cross-site scripting via unescaped default option body

Published Aug 31, 2026 · Updated Aug 31, 2026

Cross-site scripting in Apache Wicket 8.0.0 through 8.18.0, 9.0.0 through 9.23.0, and 10.0.0 through 10.10.0 allows attackers to execute script. AbstractSingleSelectChoice writes the default option body returned by getNullValidDisplayValue() or getNullKeyDisplayValue() directly into markup without the escaping applied to other options. Exploitation requires an application override or nullValid or null bundle entry containing attacker-influenced data; Wicket's bundled values are plain text, and RadioChoice is unaffected.

CVSS severityUnavailable
Unscored
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cross-site scripting in Apache Wicket 8.0.0 through 8.18.0, 9.0.0 through 9.23.0, and 10.0.0 through 10.10.0 allows attackers to execute script. AbstractSingleSelectChoice writes the default option body returned by getNullValidDisplayValue() or getNullKeyDisplayValue() directly into markup without the escaping applied to other options. Exploitation requires an application override or nullValid or null bundle entry containing attacker-influenced data; Wicket's bundled values are plain text, and RadioChoice is unaffected.

The record

CVE
CVE-2026-76986
Published
Aug 31, 2026
Updated
Aug 31, 2026
Vendor
The Apache Software Foundation
Product
Apache Wicket
Classifications
CWE-79, T1059.007
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=10.0.0 <=10.10.0
  2. Affected versionversion=8.0.0 <=8.18.0
  3. Affected versionversion=9.0.0 <=9.23.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache Wicketversion=10.0.0 <=10.10.0; version=8.0.0 <=8.18.0; version=9.0.0 <=9.23.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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