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MEDIUM severity

CVE-2022-29577 — antisamy

MEDIUMFix: nahsra/antisamy@32e2735

CVE-2022-29577 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.owasp.antisamy:antisamy. A fix is available for org.owasp.antisamy:antisamy — see the affected versions and patch details below.

Cross-site Scripting in OWASP AntiSamy

Also known asGHSA-vp37-2f9p-3vr3
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2022-29577.

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs71th percentile — riskier than 71% of all scored CVEsHighest risk
0.00%0.61%1.22%1.83%0.2%1.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.owasp.antisamy:antisamy

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

AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. OWASP AntiSamy before 1.6.7 allows XSS via HTML tag smuggling on STYLE content with crafted input. The output serializer does not properly encode the supposed Cascading Style Sheets (CSS) content. NOTE: this issue exists because of an incomplete fix for CVE-2022-28367.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.owasp.antisamy:antisamyall versions1.6.7org.owasp.antisamy:antisamy:1.6.7

Affected Products

3 products · 6 configurations
Application
antisamyantisamy_project
< 1.6.7
range
Application
enterprise manager base platformoracle
2 versions
13.4.0.013.5.0.0
Application
weblogic serveroracle
3 versions
12.2.1.3.012.2.1.4.014.1.1.0.0

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.antisamy:antisamy, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.owasp.antisamy:antisamy to 1.6.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-29577 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

AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. OWASP AntiSamy before 1.6.7 allows XSS via HTML tag smuggling on STYLE content with crafted input. The output serializer does not properly encode the supposed Cascading Style Sheets (CSS) content. NOTE: this issue exists because of an incomplete fix for CVE-2022-28367.
O3 Security · Impact-Aware SCA

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CVE-2022-29577: antisamy XSS — Fixed in 1.6.7