{"schemaVersion":3,"id":"RHSA-2026:18536","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Red Hat Security Advisory: tomcat9 security update","dates":{"published":"2026-05-19T10:06:41.000Z","modified":"2026-10-09T10:20:36.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"OSV · Red hat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":true,"selection":"version-preference"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Red hat","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true}]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"redhat","product":"tomcat9","name":"tomcat9","label":"tomcat9","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-admin-webapps","name":"tomcat9-admin-webapps","label":"tomcat9-admin-webapps","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-admin-webapps","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-docs-webapp","name":"tomcat9-docs-webapp","label":"tomcat9-docs-webapp","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-docs-webapp","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-el-3.0-api","name":"tomcat9-el-3.0-api","label":"tomcat9-el-3.0-api","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-el-3.0-api","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-jsp-2.3-api","name":"tomcat9-jsp-2.3-api","label":"tomcat9-jsp-2.3-api","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-jsp-2.3-api","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-lib","name":"tomcat9-lib","label":"tomcat9-lib","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-lib","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-servlet-4.0-api","name":"tomcat9-servlet-4.0-api","label":"tomcat9-servlet-4.0-api","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-servlet-4.0-api","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null},{"vendor":"redhat","product":"tomcat9-webapps","name":"tomcat9-webapps","label":"tomcat9-webapps","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/tomcat9-webapps","purlType":"rpm","versions":[{"text":"< 1:9.0.110-2.el10_2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.0.110-2.el10_2","eol":null,"hubHref":null}],"affectedCount":8,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:18536","label":"access.redhat.com/errata/RHSA-2026:18536","hostname":"access.redhat.com","tags":["Advisory"]},{"url":"https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/10/html/10.2_release_notes/index","label":"docs.redhat.com/en/documentation/red_hat_enterprise_linux/10/html/10.2_release_notes/index","hostname":"docs.redhat.com","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/updates/classification/#important","label":"access.redhat.com/security/updates/classification/","hostname":"access.redhat.com","tags":["ARTICLE"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2369253","label":"bugzilla.redhat.com/show_bug.cgi?id=2369253","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2388226","label":"bugzilla.redhat.com/show_bug.cgi?id=2388226","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2406590","label":"bugzilla.redhat.com/show_bug.cgi?id=2406590","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://issues.redhat.com/browse/RHEL-148687","label":"issues.redhat.com/browse/RHEL-148687","hostname":"issues.redhat.com","tags":["ARTICLE"]},{"url":"https://issues.redhat.com/browse/RHEL-158962","label":"issues.redhat.com/browse/RHEL-158962","hostname":"issues.redhat.com","tags":["ARTICLE"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_18536.json","label":"security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_18536.json","hostname":"security.access.redhat.com","tags":["Advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-34750","label":"access.redhat.com/security/cve/CVE-2024-34750","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2295651","label":"bugzilla.redhat.com/show_bug.cgi?id=2295651","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-34750","label":"www.cve.org/CVERecord?id=CVE-2024-34750","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34750","label":"nvd.nist.gov/vuln/detail/CVE-2024-34750","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://lists.apache.org/thread/4kqf0bc9gxymjc2x7v3p7dvplnl77y8l","label":"lists.apache.org/thread/4kqf0bc9gxymjc2x7v3p7dvplnl77y8l","hostname":"lists.apache.org","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-38286","label":"access.redhat.com/security/cve/CVE-2024-38286","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2314686","label":"bugzilla.redhat.com/show_bug.cgi?id=2314686","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-38286","label":"www.cve.org/CVERecord?id=CVE-2024-38286","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-38286","label":"nvd.nist.gov/vuln/detail/CVE-2024-38286","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://lists.apache.org/thread/wms60cvbsz3fpbz9psxtfx8r41jl6d4s","label":"lists.apache.org/thread/wms60cvbsz3fpbz9psxtfx8r41jl6d4s","hostname":"lists.apache.org","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-46701","label":"access.redhat.com/security/cve/CVE-2025-46701","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-46701","label":"www.cve.org/CVERecord?id=CVE-2025-46701","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46701","label":"nvd.nist.gov/vuln/detail/CVE-2025-46701","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://lists.apache.org/thread/xhqqk9w5q45srcdqhogdk04lhdscv30j","label":"lists.apache.org/thread/xhqqk9w5q45srcdqhogdk04lhdscv30j","hostname":"lists.apache.org","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-55668","label":"access.redhat.com/security/cve/CVE-2025-55668","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-55668","label":"www.cve.org/CVERecord?id=CVE-2025-55668","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55668","label":"nvd.nist.gov/vuln/detail/CVE-2025-55668","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/apache/tomcat/commit/8621e4c6ba2c916a41eb34cb0f781171ead33fb6","label":"github.com/apache/tomcat/commit/8621e4c6ba2c916a41eb34cb0f781171ead33fb6","hostname":"github.com","tags":["ARTICLE"]},{"url":"https://github.com/apache/tomcat/commit/90306d971bb8b8393336d893644124fb2ca11d21","label":"github.com/apache/tomcat/commit/90306d971bb8b8393336d893644124fb2ca11d21","hostname":"github.com","tags":["ARTICLE"]},{"url":"https://github.com/apache/tomcat/commit/9c3673ba04009377cb0c81ccb6cf5078aec1aa95","label":"github.com/apache/tomcat/commit/9c3673ba04009377cb0c81ccb6cf5078aec1aa95","hostname":"github.com","tags":["ARTICLE"]},{"url":"https://lists.apache.org/thread/v6bknr96rl7l1qxkl1c03v0qdvbbqs47","label":"lists.apache.org/thread/v6bknr96rl7l1qxkl1c03v0qdvbbqs47","hostname":"lists.apache.org","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-55754","label":"access.redhat.com/security/cve/CVE-2025-55754","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-55754","label":"www.cve.org/CVERecord?id=CVE-2025-55754","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55754","label":"nvd.nist.gov/vuln/detail/CVE-2025-55754","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/apache/tomcat/commit/5a3db092982c0c58d4855304167ee757fe5e79bb","label":"github.com/apache/tomcat/commit/5a3db092982c0c58d4855304167ee757fe5e79bb","hostname":"github.com","tags":["ARTICLE"]},{"url":"https://lists.apache.org/thread/j7w54hqbkfcn0xb9xy0wnx8w5nymcbqd","label":"lists.apache.org/thread/j7w54hqbkfcn0xb9xy0wnx8w5nymcbqd","hostname":"lists.apache.org","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-61795","label":"access.redhat.com/security/cve/CVE-2025-61795","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2406588","label":"bugzilla.redhat.com/show_bug.cgi?id=2406588","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-61795","label":"www.cve.org/CVERecord?id=CVE-2025-61795","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61795","label":"nvd.nist.gov/vuln/detail/CVE-2025-61795","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/apache/tomcat/commit/1cdf5f730ede75a0759492f179ac21ca4ff68e06","label":"github.com/apache/tomcat/commit/1cdf5f730ede75a0759492f179ac21ca4ff68e06","hostname":"github.com","tags":["ARTICLE"]},{"url":"https://lists.apache.org/thread/wm9mx8brmx9g4zpywm06ryrtvd3160pp","label":"lists.apache.org/thread/wm9mx8brmx9g4zpywm06ryrtvd3160pp","hostname":"lists.apache.org","tags":["ARTICLE"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-55957","label":"access.redhat.com/security/cve/CVE-2026-55957","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2494669","label":"bugzilla.redhat.com/show_bug.cgi?id=2494669","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-55957","label":"www.cve.org/CVERecord?id=CVE-2026-55957","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55957","label":"nvd.nist.gov/vuln/detail/CVE-2026-55957","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://lists.apache.org/thread/7fk339o5jvd4mcgsf0chbrn4o525ccjh","label":"lists.apache.org/thread/7fk339o5jvd4mcgsf0chbrn4o525ccjh","hostname":"lists.apache.org","tags":["ARTICLE"]}],"lineage":{"upstream":["CVE-2024-34750","CVE-2024-38286","CVE-2025-46701","CVE-2025-55668","CVE-2025-55754","CVE-2025-61795","CVE-2026-55957"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-19T10:06:41.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-09T10:20:36.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T04:06:13.306Z","stale":false,"partial":false}}