CVE-2024-52317 — tomcat-embed-core
MEDIUMCVE-2024-52317 is a medium-severity (CVSS 6.5) CWE-326 vulnerability in org.apache.tomcat.embed:tomcat-embed-core. 1 public exploit reference exists, so weaponization risk is real. A fix is available for org.apache.tomcat.embed:tomcat-embed-core — see the affected versions and patch details below.
Apache Tomcat: Request/response mix-up with HTTP/2
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- 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-2024-52317.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2024-52317 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,166 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.apache.tomcat.embed:tomcat-embed-core☕org.apache.tomcat:tomcat-coyote☕org.apache.tomcat.embed:tomcat-embed-core☕org.apache.tomcat.embed:tomcat-embed-core☕org.apache.tomcat:tomcat-coyote☕org.apache.tomcat:tomcat-coyoteReal-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
Incorrect object re-cycling and re-use vulnerability in Apache Tomcat. Incorrect recycling of the request and response used by HTTP/2 requests could lead to request and/or response mix-up between users.
This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.0-M26, from 10.1.27 through 10.1.30, from 9.0.92 through 9.0.95.
Users are recommended to upgrade to version 11.0.0, 10.1.31 or 9.0.96, which fixes the issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.tomcat.embed:tomcat-embed-core | ≥ 9.0.92&&< 9.0.96 | 9.0.96org.apache.tomcat.embed:tomcat-embed-core:9.0.96 |
| ☕Maven | org.apache.tomcat:tomcat-coyote | ≥ 9.0.92&&< 9.0.96 | 9.0.96org.apache.tomcat:tomcat-coyote:9.0.96 |
| ☕Maven | org.apache.tomcat.embed:tomcat-embed-core | ≥ 10.1.27&&< 10.1.31 | 10.1.31org.apache.tomcat.embed:tomcat-embed-core:10.1.31 |
| ☕Maven | org.apache.tomcat.embed:tomcat-embed-core | ≥ 11.0.0-M23&&< 11.0.0 | 11.0.0org.apache.tomcat.embed:tomcat-embed-core:11.0.0 |
| ☕Maven | org.apache.tomcat:tomcat-coyote | ≥ 10.1.27&&< 10.1.31 | 10.1.31org.apache.tomcat:tomcat-coyote:10.1.31 |
| ☕Maven | org.apache.tomcat:tomcat-coyote | ≥ 11.0.0-M23&&< 11.0.0 | 11.0.0org.apache.tomcat:tomcat-coyote:11.0.0 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
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.embed:tomcat-embed-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.tomcat.embed:tomcat-embed-core to 9.0.96 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-52317 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2024-52317 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2024-52317. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2024-52317 in your dependencies?
O3 Security finds CVE-2024-52317 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.