GHSA-8mc5-53m5-3qj2 is a medium-severity (CVSS 5.3) Improper Input Validation vulnerability in org.apache.tomcat:tomcat-coyote. O3 Security confirms whether GHSA-8mc5-53m5-3qj2 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Apache Tomcat has an Improper Input Validation vulnerability
Real-World Exposure
org.apache.tomcat:tomcat-coyote☕org.apache.tomcat:tomcat-coyote☕org.apache.tomcat:tomcat-coyote☕org.apache.tomcat:tomcat☕org.apache.tomcat:tomcat☕org.apache.tomcat:tomcat☕org.apache.tomcat.embed:tomcat-embed-core☕org.apache.tomcat.embed:tomcat-embed-core+1 moreReal-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
Improper Input Validation vulnerability in Apache Tomcat due to an incomplete fix of CVE-2025-66614.
This issue affects Apache Tomcat: from 11.0.15 through 11.0.19, from 10.1.50 through 10.1.52, from 9.0.113 through 9.0.115.
Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.tomcat:tomcat-coyote | ≥ 9.0.113&&< 9.0.116 | 9.0.116 |
| ☕Maven | org.apache.tomcat:tomcat-coyote | ≥ 10.1.50&&< 10.1.53 | 10.1.53 |
| ☕Maven | org.apache.tomcat:tomcat-coyote | ≥ 11.0.15&&< 11.0.20 | 11.0.20 |
| ☕Maven | org.apache.tomcat:tomcat | ≥ 9.0.113&&< 9.0.116 | 9.0.116 |
| ☕Maven | org.apache.tomcat:tomcat | ≥ 10.1.50&&< 10.1.53 | 10.1.53 |
| ☕Maven | org.apache.tomcat:tomcat | ≥ 11.0.15&&< 11.0.20 | 11.0.20 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.tomcat:tomcat-coyote. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update org.apache.tomcat:tomcat-coyote to 9.0.116 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8mc5-53m5-3qj2 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-8mc5-53m5-3qj2 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-8mc5-53m5-3qj2. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-8mc5-53m5-3qj2 in your dependencies?
O3 detects GHSA-8mc5-53m5-3qj2 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.