cve.bz

CVE-2016-8745

7.5 highEPSS 16%

High (7.5) in apache tomcat. EPSS 16% chance of exploitation in the next 30 days. Fixed in org.apache.tomcat:tomcat-util 6.0.50, 7.0.75, 8.0.41.

A bug in the error handling of the send file code for the NIO HTTP connector in Apache Tomcat 9.0.0.M1 to 9.0.0.M13, 8.5.0 to 8.5.8, 8.0.0.RC1 to 8.0.39, 7.0.0 to 7.0.73 and 6.0.16 to 6.0.48 resulted in the current Processor object being added to the Processor cache multiple times. This in turn meant that the same Processor could be used for concurrent requests. Sharing a Processor can result in information leakage between requests including, not not limited to, session ID and the response body. The bug was first noticed in 8.5.x onwards where it appears the refactoring of the Connector code for 8.5.x onwards made it more likely that the bug was observed. Initially it was thought that the 8.5.x refactoring introduced the bug but further investigation has shown that the bug is present in all currently supported Tomcat versions.

Severity

CVSS 3.0

7.5 high
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
16% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
CWE
CWE-388
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-w3j5-q8f2-3cqqMavenorg.apache.tomcat:tomcat-util>=9.0.0.M1 <9.0.0.M149.0.0.M14
GHSA-w3j5-q8f2-3cqqMavenorg.apache.tomcat:tomcat-util>=8.5.0 <8.5.98.5.9
GHSA-w3j5-q8f2-3cqqMavenorg.apache.tomcat:tomcat-util>=8.0.0-RC1 <8.0.418.0.41
GHSA-w3j5-q8f2-3cqqMavenorg.apache.tomcat:tomcat-util>=7.0.0 <7.0.757.0.75
GHSA-w3j5-q8f2-3cqqMavenorg.apache.tomcat:tomcat-util>=6.0.16 <6.0.506.0.50

References

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