MinorCritical vulnerability

CVE-2026-78437 (CVSS 7.3)

NVD · officialPublished Sep 23, 2026Risk 23/100EPSS 0.3%

Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause one request from another user to fail. This issue affects Apache Tomcat: from 11.0.19 through 11.0.25, from 10.1.53 through 10.1.59, from 9.0.116 through 9.0.121. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

Technical details

CVSS

7.3

AV:NetworkAC:LowPR:NoneUI:NoneC:LowI:LowA:Low

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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