{"id":"CVE-2026-77756","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-77756","generatedAt":"2026-10-28T01:19:46.611Z","title":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to…","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse proxy.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.47 through 9.0.121.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.67 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.","published":"2026-09-23T12:17:07.000Z","lastModified":"2026-09-23T19:19:19.000Z","status":"Awaiting Analysis","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":3.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-444"],"affected":[],"epss":{"score":0.00526,"percentile":0.44306,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.00256,"percentile":0.15371}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.53%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T12:17:07.000Z","detail":{"score":"3.7","severity":"LOW","publishedAt":"2026-09-23T12:17:06.663Z"},"summary":"New CVE, low severity (CVSS 3.7)."}],"references":[{"url":"https://lists.apache.org/thread/bl5b6rxqh3vb2k9bj2794vhor7o6xl3z","source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/22","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-77756","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}