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Validator.isValidSafeHTML is being deprecated and will be deleted from org.owasp.esapi:esapi in 1 yearGHSA-r68h-jhhj-9jvm

GHSA-r68h-jhhj-9jvm is a security vulnerability in org.owasp.esapi:esapi. A fix is available for org.owasp.esapi:esapi — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 26, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
☕org.owasp.esapi:esapi

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Impact

The Validator.isValidSafeHTML method can result in false negatives where it reports some input as safe (i.e., returns true), but really isn't, and using that same input as-is can in certain circumstances result in XSS vulnerabilities. Because this method cannot be fixed, it is being deprecated and will be removed in one years time from when this advisory is published. Full details may be found in ESAPI Security Bulletin #12.

Note that all versions of ESAPI, that have this method (which dates back to at least the ESAPI 1.3 release more than 15 years ago) have this issue and it will continue to exist until we remove these two methods in a future ESAPI release.

Patches

There is no patch. We do not believe that it is possible to patch this pretentiously named method other then perhaps renaming it to something like Validator.mightThisBeValidSafeHTML to dissuade developers from using it.

Workarounds

Stop using this method. Note that Validator.getValidSafeHTML is believed to be safe to use with the default antisamy-esapi.xml AntiSamy policy file.

Why is no CVE being filed?

We outline the reasons in the section "Why no CVE for this issue?" in ESAPI Security Bulletin #12. If after reading that, if you still want to file a CVE or this, knock yourself out.

References

CWE-79 CWE-80 ESAPI Security Bulletin #12

Final resolution

This GitHub Security Advisory should now be considered remediated in ESAPI versions 2.6.0.0 and later as the deprecated methods have been removed from the ESAPI jar.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.owasp.esapi:esapiall versions2.6.0.0org.owasp.esapi:esapi:2.6.0.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.owasp.esapi:esapi, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.owasp.esapi:esapi to 2.6.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r68h-jhhj-9jvm is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

### Impact The `Validator.isValidSafeHTML` method can result in false negatives where it reports some input as safe (i.e., returns true), but really isn't, and using that same input as-is can in certain circumstances result in XSS vulnerabilities. Because this method cannot be fixed, it is being deprecated and will be removed in one years time from when this advisory is published. Full details may be found in [ESAPI Security Bulletin #12](https://github.com/ESAPI/esapi-java-legacy/blob/develop/documentation/ESAPI-security-bulletin12.pdf). Note that all versions of ESAPI, that have this method
O3 Security · Impact-Aware SCA

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Validator.isValidSafeHTML is being deprecated and will…