--- id: CVE-2017-5647 title: >- A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when… summary: >- A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when… severity: none vendor: Apache Software Foundation product: Apache Tomcat affected: - apache_tomcat 9.0.0.M1 to 9.0.0.M18 - apache_tomcat 8.5.0 to 8.5.12 - apache_tomcat 8.0.0.RC1 to 8.0.42 - apache_tomcat 7.0.0 to 7.0.76 - apache_tomcat 6.0.0 to 6.0.52 ssvc: exploitation: none automatable: 'no' technicalImpact: partial timestamp: '2026-11-02T17:27:23.258212Z' published: '2017-04-17' updated: '2026-11-02' sourceUpdated: '2026-11-02T17:27:36.591Z' source: CVEORG sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2017-5647' references: - url: 'https://security.gentoo.org/glsa/201705-09' label: GLSA-201705-09 - url: 'https://security.netapp.com/advisory/ntap-20180614-0001/' - url: 'https://access.redhat.com/errata/RHSA-2017:3080' label: 'RHSA-2017:3080' - url: 'https://access.redhat.com/errata/RHSA-2017:1801' label: 'RHSA-2017:1801' - url: 'http://www.debian.org/security/2017/dsa-3843' label: DSA-3843 - url: 'http://www.arubanetworks.com/assets/alert/HPESBHF03730.txt' - url: 'https://access.redhat.com/errata/RHSA-2017:2494' label: 'RHSA-2017:2494' - url: >- https://lists.apache.org/thread.html/5796678c5a773c6f3ff57c178ac247d85ceca0dee9190ba48171451a%40%3Cusers.tomcat.apache.org%3E label: >- [users] 20170410 [SECURITY] CVE-2017-5647 Apache Tomcat Information Disclosure - url: 'http://www.securitytracker.com/id/1038218' label: '1038218' - url: 'http://www.debian.org/security/2017/dsa-3842' label: DSA-3842 - url: >- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03730en_us - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html - url: 'https://access.redhat.com/errata/RHSA-2017:1802' label: 'RHSA-2017:1802' - url: 'https://access.redhat.com/errata/RHSA-2017:2493' label: 'RHSA-2017:2493' - url: 'https://access.redhat.com/errata/RHSA-2017:3081' label: 'RHSA-2017:3081' - url: >- https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190319 svn commit: r1855831 [24/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ - url: >- https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190319 svn commit: r1855831 [25/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ - url: >- https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190319 svn commit: r1855831 [23/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ - url: >- https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190325 svn commit: r1856174 [22/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ - url: >- https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190325 svn commit: r1856174 [23/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ - url: >- https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190325 svn commit: r1856174 [24/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ - url: >- https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190325 svn commit: r1856174 [21/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ - url: >- https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190413 svn commit: r1857494 [17/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ - url: >- https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190413 svn commit: r1857494 [16/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ - url: >- https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190413 svn commit: r1857494 [15/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ - url: >- https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190415 svn commit: r1857582 [17/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ - url: >- https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190415 svn commit: r1857582 [19/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ - url: >- https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20190415 svn commit: r1857582 [16/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ - url: >- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html - url: >- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20200203 svn commit: r1873527 [25/30] - /tomcat/site/trunk/docs/ - url: >- https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20200203 svn commit: r1873527 [23/30] - /tomcat/site/trunk/docs/ - url: >- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20200213 svn commit: r1873980 [27/34] - /tomcat/site/trunk/docs/ - url: >- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20200213 svn commit: r1873980 [29/34] - /tomcat/site/trunk/docs/ - url: >- https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E label: >- [tomcat-dev] 20200213 svn commit: r1873980 [26/34] - /tomcat/site/trunk/docs/ tags: - cve.org epss: 0.1684 epssPercentile: 0.97054 ingestedAt: '2026-11-05T19:30:42.728Z' --- ## Overview A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when send file processing of the previous request completed. This could result in responses appearing to be sent for the wrong request. For example, a user agent that sent requests A, B and C could see the correct response for request A, the response for request C for request B and no response for request C. ## Affected - `apache_tomcat 9.0.0.M1 to 9.0.0.M18` - `apache_tomcat 8.5.0 to 8.5.12` - `apache_tomcat 8.0.0.RC1 to 8.0.42` - `apache_tomcat 7.0.0 to 7.0.76` - `apache_tomcat 6.0.0 to 6.0.52` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges.