{"id":"CVE-2018-1323","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-1323","generatedAt":"2026-10-28T22:42:10.658Z","title":"If only a sub-set of the URLs supported by Tomcat were exposed via IIS, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing Tomcat via the…","description":"The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it to the URI-worker map did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via IIS, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing Tomcat via the reverse proxy.","published":"2018-03-12T16:29:00.000Z","lastModified":"2026-06-17T01:51:01.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-22","CWE-200"],"affected":["apache/tomcat jk connector"],"epss":{"score":0.46397,"percentile":0.98812,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.67359,"percentile":0.99299},{"date":"2026-09-22","score":0.46397,"percentile":0.98764}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 46.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.46397,"from":0.67359,"percentile":0.98764},"summary":"EPSS moved from 67.4% to 46.4% probability of exploitation in the next thirty days."},{"kind":"epss","label":"EPSS jump","at":"2026-09-21T00:00:00.000Z","detail":{"to":0.67359,"from":0.46397,"percentile":0.99299},"summary":"EPSS moved from 46.4% to 67.4% probability of exploitation in the next thirty days."}],"references":[{"url":"http://www.securityfocus.com/bid/103389","tags":["Third Party Advisory","VDB Entry"],"source":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:1843","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/6e146bce83578bd870893250ba8354e28f9d8e86c674c30dbeee529f%40%3Cannounce.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E","source":"security@apache.org"},{"url":"http://www.securityfocus.com/bid/103389","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1843","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/6e146bce83578bd870893250ba8354e28f9d8e86c674c30dbeee529f%40%3Cannounce.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-1323","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."}