{"id":"DEBIAN-CVE-2026-78437","details":"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.","modified":"2026-09-24T05:00:10.546796989Z","published":"2026-09-23T12:17:07.340Z","upstream":["CVE-2026-78437"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-78437"}],"affected":[{"package":{"name":"tomcat10","ecosystem":"Debian:12","purl":"pkg:deb/debian/tomcat10?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.1.10-1","10.1.13-1","10.1.14-1","10.1.15-1","10.1.16-1","10.1.20-1","10.1.23-1","10.1.25-1","10.1.25-1~bpo12+1","10.1.25-2","10.1.30-1","10.1.30-1~bpo12+1","10.1.31-1","10.1.33-1","10.1.33-1~bpo12+1","10.1.34-0+deb12u1","10.1.34-0+deb12u2","10.1.34-1","10.1.35-1","10.1.40-1","10.1.40-1~bpo12+1","10.1.46-1","10.1.52-1","10.1.52-1~deb12u1","10.1.52-1~deb13u1","10.1.52-2","10.1.54-1","10.1.55-1","10.1.55-1~deb12u1","10.1.55-1~deb13u1","10.1.6-1","10.1.6-1+deb12u1","10.1.6-1+deb12u2","10.1.60-1","10.1.7-1","10.1.8-1","10.1.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat10","ecosystem":"Debian:13","purl":"pkg:deb/debian/tomcat10?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.1.40-1","10.1.46-1","10.1.52-1","10.1.52-1~deb12u1","10.1.52-1~deb13u1","10.1.52-2","10.1.54-1","10.1.55-1","10.1.55-1~deb12u1","10.1.55-1~deb13u1","10.1.60-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat10","ecosystem":"Debian:14","purl":"pkg:deb/debian/tomcat10?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.1.40-1","10.1.46-1","10.1.52-1","10.1.52-1~deb12u1","10.1.52-1~deb13u1","10.1.52-2","10.1.54-1","10.1.55-1","10.1.55-1~deb12u1","10.1.55-1~deb13u1","10.1.60-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat11","ecosystem":"Debian:13","purl":"pkg:deb/debian/tomcat11?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["11.0.11-1","11.0.15-1","11.0.15-1~deb13u1","11.0.18-1","11.0.21-1","11.0.22-1","11.0.22-1~deb13u1","11.0.22-2","11.0.24-1","11.0.6-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat11","ecosystem":"Debian:14","purl":"pkg:deb/debian/tomcat11?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["11.0.11-1","11.0.15-1","11.0.15-1~deb13u1","11.0.18-1","11.0.21-1","11.0.22-1","11.0.22-1~deb13u1","11.0.22-2","11.0.24-1","11.0.6-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat9","ecosystem":"Debian:12","purl":"pkg:deb/debian/tomcat9?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat9","ecosystem":"Debian:13","purl":"pkg:deb/debian/tomcat9?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}},{"package":{"name":"tomcat9","ecosystem":"Debian:14","purl":"pkg:deb/debian/tomcat9?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.70-2"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78437.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}