CVE-2025-12799 Details
Description
A flaw was found in Jastow. Jastow is vulnerable to Cross-Site Scripting (XSS) attack. If using a set of combined configuration to allow unescaped characters in URL with embedded Undertow and Jastow, a server might be vulnerable to improper input handling.
A Cross-Site Scripting (XSS) vulnerability has been identified in Jastow, which is used in Red Hat JBoss Enterprise Application Platform. This issue arises when a server is configured to allow unescaped characters in URLs, combined with embedded Undertow and Jastow, leading to improper handling of input. Exploitation requires a specific configuration, limiting its impact in typical deployments.
Users can mitigate this vulnerability by ensuring that Undertow is not configured to allow unescaped characters in URLs, and by avoiding the use of Jastow in applications deployed on Undertow.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 9, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 29, 2026 | CVE Modified | [email protected] |
| Jul 9, 2026 | CVE Modified | CISA-ADP |
| Jul 8, 2026 | CVE Modified | [email protected] |
| Jul 7, 2026 | CVE Modified | [email protected] |
| Jul 7, 2026 | New CVE Received | [email protected] |