CVE catalog
CVE-2009-0580
tomcat5.5 - several
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 94.44% · Oct 27, 2026
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 FORM authentication is used, allows remote attackers to enumerate valid usernames via requests to /j_security_check with malformed URL encoding of passwords, related to improper error checking in the (1) MemoryRealm, (2) DataSourceRealm, and (3) JDBCRealm authentication realms, as demonstrated by a % (percent) value for the j_password parameter. tomcat6 Information disclosure in authentication classes The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | tomcat5.5 | 5.0 | 5.5.26-5 | vulnerable |
| Debian | tomcat5.5 | 5.0 | 5.5.26-5lenny2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tomcat5.5 | deb | 5.0 | 5.5.26-5lenny2 | Not reported | DSA-2207-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: