CVE-2009-0033
apache tomcat: no CVSS score yet. EPSS 10% chance of exploitation in the next 30 days.
Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.
- EPSS
- 10% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:tomcat
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-5cw4-ggx9-36vg | Maven | org.apache.tomcat:tomcat | >=4.1.0 <=4.1.39 | no fix published |
| GHSA-5cw4-ggx9-36vg | Maven | org.apache.tomcat:tomcat | >=5.5.0 <=5.5.27 | no fix published |
| GHSA-5cw4-ggx9-36vg | Maven | org.apache.tomcat:tomcat | >=6.0.0 <=6.0.18 | no fix published |