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CVE-2007-0450

Fix: apache/tomcat@0c5ec5b

CVE-2007-0450 is a Path Traversal vulnerability in org.apache.tomcat:tomcat. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2007-0450 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Apache Tomcat Directory Traversal

Published
May 1, 2022
Updated
Feb 4, 2026
Affected
2 pkgs
Patched
2 / 2
Exploits
1 known
Exploitation data as of Sep 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
90.8%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
89.0%89.9%90.7%91.6%91.0%90.8%Mar 26Jul 26Sep 26

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.

Real-World Exposure

2 pkgs affected
org.apache.tomcat:tomcatorg.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

Directory traversal vulnerability in Tomcat 5.x before 5.5.22 and 6.x before 6.0.10, when using certain proxy modules (mod_proxy, mod_rewrite, mod_jk), allows remote attackers to read arbitrary files via a .. (dot dot) sequence with combinations of (1) / (slash), (2) \ (backslash), and (3) URL-encoded backslash (%5C) characters in the URL, which are valid separators in Tomcat but not in Apache.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
Mavenorg.apache.tomcat:tomcat5.0&&< 5.5.225.5.22
Mavenorg.apache.tomcat:tomcat6.0&&< 6.0.106.0.10
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-29739remotelinux✓ Verified

Apache Tomcat 5.x/6.0.x - Directory Traversal

by D. Matscheko · Mar 14, 2007

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.apache.tomcat:tomcat. 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.

  2. Fix

    Update org.apache.tomcat:tomcat to 5.5.22 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2007-0450 is resolved across your whole dependency graph.

  3. 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.

  4. How O3 protects you

    O3 pinpoints whether CVE-2007-0450 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 CVE-2007-0450. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Frequently Asked Questions

Directory traversal vulnerability in Tomcat 5.x before 5.5.22 and 6.x before 6.0.10, when using certain proxy modules (mod_proxy, mod_rewrite, mod_jk), allows remote attackers to read arbitrary files via a `..` (dot dot) sequence with combinations of (1) `/` (slash), (2) `\` (backslash), and (3) URL-encoded backslash (`%5C`) characters in the URL, which are valid separators in Tomcat but not in Apache.
O3 Security · Impact-Aware SCA

Is CVE-2007-0450 in your dependencies?

O3 detects CVE-2007-0450 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

CVE-2007-0450: Apache Tomcat Directory… | O3 Security