How severe is CVE-2002-0493?

No CVSS score has been assigned to CVE-2002-0493 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2002-0493?

CVE-2002-0493 affects the following packages: org.apache.tomcat:tomcat (Maven). Ecosystems affected: Maven.

How do I fix CVE-2002-0493?

Update org.apache.tomcat:tomcat to 4.0b7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2002-0493 is resolved across your whole dependency graph.

How do I detect CVE-2002-0493 in my Maven dependencies?

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

How do I mitigate CVE-2002-0493 if there is no patch (or I can't update yet)?

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.

Is CVE-2002-0493 actively exploited in the wild?

No public exploit code has been indexed for CVE-2002-0493 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2002-0493?

CVE-2002-0493 has an EPSS (Exploit Prediction Scoring System) score of 3.8%, placing it in the 90th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2002-0493?

CVE-2002-0493 is classified as CWE-254 (CWE-254). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2002-0493 published, and has it been updated?

CVE-2002-0493 was published on April 30, 2022 and was last updated on February 12, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕ Maven

Not in CISA KEV

CVE-2002-0493 — tomcat

CVE-2002-0493 is a CWE-254 vulnerability in org.apache.tomcat:tomcat. A fix is available for org.apache.tomcat:tomcat — see the affected versions and patch details below.

Apache Tomcat may be started without proper security settings

Published

Apr 30, 2022

Updated

Feb 12, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

3.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs90th percentile — riskier than 90% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

☕org.apache.tomcat:tomcat

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

Apache Tomcat may be started without proper security settings if errors are encountered while reading the web.xml file, which could allow attackers to bypass intended restrictions.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.tomcat:tomcat`	all versions	4.0b7`org.apache.tomcat:tomcat:4.0b7`

Affected Products

1 product · 1 configurations

Application

tomcatapache

≤ 3.3.2

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.tomcat:tomcat, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.tomcat:tomcat to 4.0b7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2002-0493 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.

Frequently Asked Questions

Apache Tomcat may be started without proper security settings if errors are encountered while reading the `web.xml` file, which could allow attackers to bypass intended restrictions.

O3 Security · Impact-Aware SCA

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