{"id":"CVE-2026-74049","kind":"vulnerability","aliases":["CVE-2026-74049"],"related":[],"title":"Apache Tomcat: execution after redirect flaw affects versions up to 11.0.26","description":"Execution After Redirect (EAR) vulnerability in Apache Tomcat.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\n\nUsers are recommended to upgrade to version 11.0.27, 10.1.61, 9.0.123, which fixes the issue.","summary":"Apache Tomcat has an Execution After Redirect (EAR) flaw in several release lines, where code can keep running after a redirect is sent. The sources do not say what an attacker can read or change through it.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["java","runtime","self-hosted","tomcat"],"not_affected_if":["unknown"],"how_to_check":"- Run `catalina.sh version` or check the Tomcat version in the server status page to see whether it is in an affected range: 11.0.0-M1 to 11.0.26, 10.1.0-M1 to 10.1.60, 9.0.0.M1 to 9.0.122, or any 8.5.x or 7.0.x release.","fix":"- Upgrade Apache Tomcat 11.x to `11.0.27`.\n- Upgrade Apache Tomcat 10.1.x to `10.1.61`.\n- Upgrade Apache Tomcat 9.0.x to `9.0.123`.\n- Move any 8.5.x or 7.0.x installs to a supported release line; the sources say those are EOL and affected.","status":"open","published_at":"2026-10-20T14:17:00+00:00","first_seen_at":"2026-10-23T21:57:20+00:00","triaged_at":"2026-10-25T05:04:47+00:00","updated_at":"2026-10-25T05:04:47+00:00","category":"runtime","confidence":0.5,"triage":{"at":"2026-10-25T05:04:47Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Apache Tomcat 11.x to `11.0.27`.\n- Upgrade Apache Tomcat 10.1.x to `10.1.61`.\n- Upgrade Apache Tomcat 9.0.x to `9.0.123`.\n- Move any 8.5.x or 7.0.x installs to a supported release line; the sources say those are EOL and affected.","reach":"unknown","title":"Apache Tomcat: execution after redirect flaw affects versions up to 11.0.26","impact":"medium","summary":"Apache Tomcat has an Execution After Redirect (EAR) flaw in several release lines, where code can keep running after a redirect is sent. The sources do not say what an attacker can read or change through it.","category":"runtime","nicknames":[],"who_cares":["tomcat","java","self-hosted"],"confidence":0.5,"needs_auth":"unknown","worst_case":"unknown; sources do not describe the impact","analyst_note":"Check the Apache Tomcat security advisory for CVE-2026-74049 to learn the exact impact, trigger conditions and any required configuration.","how_to_check":"- Run `catalina.sh version` or check the Tomcat version in the server status page to see whether it is in an affected range: 11.0.0-M1 to 11.0.26, 10.1.0-M1 to 10.1.60, 9.0.0.M1 to 9.0.122, or any 8.5.x or 7.0.x release.","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Teams running Apache Tomcat in the listed version ranges, including end-of-life 8.5.x and 7.0.x installs. The sources do not say which application patterns trigger the flaw, so treat all Tomcat servers in those ranges as in scope.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000672,"input_tokens":3416,"output_tokens":661,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-74049':14A,17A '10.1.0':78C '10.1.60':81C '10.1.61':128C '11.0.0':73C '11.0.26':11A,76C '11.0.27':127C '7.0.0':110C '7.0.109':112C '8.5.0':106C '8.5.100':108C '9.0.0':83C '9.0.122':86C '9.0.123':129C 'affect':7A,69C,104C,119C 'also':117C 'apach':1A,24B,65C,70C 'attack':54B 'chang':58B 'code':38B 'creat':98C 'cve':12A,15A,96C 'ear':31B,62C 'eol':91C 'execut':3A,28B,59C 'fix':131C 'flaw':6A,32B 'follow':88C 'host':22B 'issu':68C,133C 'java':18B 'keep':40B 'known':101C 'line':36B 'm1':74C,79C,84C 'may':116C 'read':56B 'recommend':122C 'redirect':5A,30B,44B,61C 'releas':35B 'run':41B 'runtim':19B 'say':51B 'self':21B 'self-host':20B 'sent':46B 'sever':34B 'sourc':48B 'time':94C 'tomcat':2A,23B,25B,66C,71C 'unsupport':114C 'upgrad':124C 'user':120C 'version':8A,89C,115C,126C 'vulner':63C","nicknames":[],"mitigations":[],"who_affected":"Teams running Apache Tomcat in the listed version ranges, including end-of-life 8.5.x and 7.0.x installs. The sources do not say which application patterns trigger the flaw, so treat all Tomcat servers in those ranges as in scope.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T14:17:00+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-74049","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74049","severity":null,"published_at":"2026-10-20T14:17:00+00:00","modified_at":"2026-10-20T19:35:38+00:00","first_seen_at":"2026-10-23T21:57:20+00:00","fetched_at":"2026-10-23T22:28:58+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}