Cross-site scripting in RESTEasy
A cross-site scripting (XSS) flaw was found in RESTEasy in versions before 3.11.1.Final and before 4.5.3.Final, where it did not properly handle URL encoding when the RESTEASY003870 exception occurs. An attacker could use this flaw to launch a reflected XSS attack.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.jboss.resteasy:resteasy-bom | < 3.11.1.Final, >= 4.0.0, < 4.5.3.Final | 3.11.1.Final, 4.5.3.Final |
| Java / Kotlin (Maven) | org.jboss.resteasy:resteasy-core | < 3.11.1.Final, >= 4.0.0, < 4.5.3.Final | 3.11.1.Final, 4.5.3.Final |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- Java / Kotlin (Maven)
- Package
org.jboss.resteasy:resteasy-bom, org.jboss.resteasy:resteasy-core- Disclosed
- 15.06.2021
- Updated
- 11.10.2026 11:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-29qj-rvv6-qrmv - CC BY 4.0
Vulnerability history: org.jboss.resteasy:resteasy-bom
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 06.2021 05.2022
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 2
Disclosures per year
- 2021: 3
- 2022: 2
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Cross-site scripting in RESTEasy this entry
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