CVSS 3.0
7.1 highCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:LCVE-2016-6816
The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.
Severity
- EPSS
- 40% chance of exploitation in the next 30 days; higher than 98% 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-jc7p-5r39-9477 | Maven | org.apache.tomcat:tomcat-coyote | >=9.0.0.M1 <9.0.0.M12 | 9.0.0.M12 |
| GHSA-jc7p-5r39-9477 | Maven | org.apache.tomcat:tomcat-coyote | >=8.5.0 <8.5.8 | 8.5.8 |
| GHSA-jc7p-5r39-9477 | Maven | org.apache.tomcat:tomcat-coyote | >=8.0.0RC1 <8.0.39 | 8.0.39 |
| GHSA-jc7p-5r39-9477 | Maven | org.apache.tomcat:tomcat-coyote | >=7.0.0 <7.0.73 | 7.0.73 |
| GHSA-jc7p-5r39-9477 | Maven | org.apache.tomcat:tomcat-coyote | >=6.0.0 <6.0.48 | 6.0.48 |