{"id":"CVE-2017-7674","title":"The CORS Filter in Apache Tomcat 9.0.0.M1 to 9.0.0.M21, 8.5.0 to 8.5.15, 8.0.0.RC1 to 8.0.44 and 7.0.41 to 7.0.78 did not add an HTTP Vary header indicating that the response varies depending on Origin","summary":"The CORS Filter in Apache Tomcat 9.0.0.M1 to 9.0.0.M21, 8.5.0 to 8.5.15, 8.0.0.RC1 to 8.0.44 and 7.0.41 to 7.0.78 did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server s…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","cwe":["CWE-345"],"vendor":"apache","product":"tomcat","affected":["tomcat = 7.0.41","tomcat = 7.0.42","tomcat = 7.0.43","tomcat = 7.0.44","tomcat = 7.0.45","tomcat = 7.0.46","tomcat = 7.0.47","tomcat = 7.0.48","tomcat = 7.0.49","tomcat = 7.0.50","tomcat = 7.0.52","tomcat = 7.0.53","tomcat = 7.0.54","tomcat = 7.0.55","tomcat = 7.0.56","tomcat = 7.0.57","tomcat = 7.0.58","tomcat = 7.0.59","tomcat = 7.0.60","tomcat = 7.0.61","tomcat = 7.0.62","tomcat = 7.0.63","tomcat = 7.0.64","tomcat = 7.0.65","tomcat = 7.0.66","tomcat = 7.0.67","tomcat = 7.0.68","tomcat = 7.0.69","tomcat = 7.0.70","tomcat = 7.0.71","tomcat = 7.0.72","tomcat = 7.0.73","tomcat = 7.0.74","tomcat = 7.0.75","tomcat = 7.0.76","tomcat = 7.0.77","tomcat = 7.0.78","tomcat = 8.0","tomcat = 8.0.0","tomcat = 8.0.1","tomcat = 8.0.2","tomcat = 8.0.3","tomcat = 8.0.4","tomcat = 8.0.5","tomcat = 8.0.6","tomcat = 8.0.7","tomcat = 8.0.8","tomcat = 8.0.9","tomcat = 8.0.10","tomcat = 8.0.11","tomcat = 8.0.12","tomcat = 8.0.13","tomcat = 8.0.14","tomcat = 8.0.15","tomcat = 8.0.16","tomcat = 8.0.17","tomcat = 8.0.18","tomcat = 8.0.19","tomcat = 8.0.20","tomcat = 8.0.21","tomcat = 8.0.22","tomcat = 8.0.23","tomcat = 8.0.24","tomcat = 8.0.25","tomcat = 8.0.26","tomcat = 8.0.27","tomcat = 8.0.28","tomcat = 8.0.29","tomcat = 8.0.30","tomcat = 8.0.31","tomcat = 8.0.32","tomcat = 8.0.33","tomcat = 8.0.34","tomcat = 8.0.35","tomcat = 8.0.36","tomcat = 8.0.37","tomcat = 8.0.38","tomcat = 8.0.39","tomcat = 8.0.40","tomcat = 8.0.41","tomcat = 8.0.42","tomcat = 8.0.43","tomcat = 8.0.44","tomcat = 8.5.0","tomcat = 8.5.1","tomcat = 8.5.2","tomcat = 8.5.3","tomcat = 8.5.4","tomcat = 8.5.5","tomcat = 8.5.6","tomcat = 8.5.7","tomcat = 8.5.8","tomcat = 8.5.9","tomcat = 8.5.10","tomcat = 8.5.11","tomcat = 8.5.12","tomcat = 8.5.13","tomcat = 8.5.14","tomcat = 8.5.15","tomcat = 9.0.0"],"published":"2017-08-11","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:17:28.663","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2017-7674","references":[{"url":"http://www.debian.org/security/2017/dsa-3974","label":"security@apache.org"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html","label":"security@apache.org"},{"url":"http://www.securityfocus.com/bid/100280","label":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:1801","label":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:1802","label":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:3081","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/22b4bb077502f847e2b9fcf00b96e81e734466ab459780ff73b60c0f%40%3Cannounce.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r15695e6203b026c9e9070ca9fa95fb17dd4cd88e5342a7dc5e1e7b85%40%3Cusers.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r1c62634b7426bee5f553307063457b99c84af73b078ede4f2592b34e%40%3Cusers.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r409efdf706c2077ae5c37018a87da725a3ca89570a9530342cdc53e4%40%3Cusers.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/06/msg00008.html","label":"security@apache.org"},{"url":"https://security.netapp.com/advisory/ntap-20180614-0003/","label":"security@apache.org"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03828en_us","label":"security@apache.org"},{"url":"http://www.debian.org/security/2017/dsa-3974","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/100280","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:1801","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:1802","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:3081","label":"af854a3a-2127-422b-91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Overview\n\nThe CORS Filter in Apache Tomcat 9.0.0.M1 to 9.0.0.M21, 8.5.0 to 8.5.15, 8.0.0.RC1 to 8.0.44 and 7.0.41 to 7.0.78 did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server side cache poisoning in some circumstances.\n\n## Affected\n\n- `tomcat = 7.0.41`\n- `tomcat = 7.0.42`\n- `tomcat = 7.0.43`\n- `tomcat = 7.0.44`\n- `tomcat = 7.0.45`\n- `tomcat = 7.0.46`\n- `tomcat = 7.0.47`\n- `tomcat = 7.0.48`\n- `tomcat = 7.0.49`\n- `tomcat = 7.0.50`\n- `tomcat = 7.0.52`\n- `tomcat = 7.0.53`\n- `tomcat = 7.0.54`\n- `tomcat = 7.0.55`\n- `tomcat = 7.0.56`\n- `tomcat = 7.0.57`\n- `tomcat = 7.0.58`\n- `tomcat = 7.0.59`\n- `tomcat = 7.0.60`\n- `tomcat = 7.0.61`\n- `tomcat = 7.0.62`\n- `tomcat = 7.0.63`\n- `tomcat = 7.0.64`\n- `tomcat = 7.0.65`\n- `tomcat = 7.0.66`\n- `tomcat = 7.0.67`\n- `tomcat = 7.0.68`\n- `tomcat = 7.0.69`\n- `tomcat = 7.0.70`\n- `tomcat = 7.0.71`\n- `tomcat = 7.0.72`\n- `tomcat = 7.0.73`\n- `tomcat = 7.0.74`\n- `tomcat = 7.0.75`\n- `tomcat = 7.0.76`\n- `tomcat = 7.0.77`\n- `tomcat = 7.0.78`\n- `tomcat = 8.0`\n- `tomcat = 8.0.0`\n- `tomcat = 8.0.1`\n- `tomcat = 8.0.2`\n- `tomcat = 8.0.3`\n- `tomcat = 8.0.4`\n- `tomcat = 8.0.5`\n- `tomcat = 8.0.6`\n- `tomcat = 8.0.7`\n- `tomcat = 8.0.8`\n- `tomcat = 8.0.9`\n- `tomcat = 8.0.10`\n- `tomcat = 8.0.11`\n- `tomcat = 8.0.12`\n- `tomcat = 8.0.13`\n- `tomcat = 8.0.14`\n- `tomcat = 8.0.15`\n- `tomcat = 8.0.16`\n- `tomcat = 8.0.17`\n- `tomcat = 8.0.18`\n- `tomcat = 8.0.19`\n- `tomcat = 8.0.20`\n- `tomcat = 8.0.21`\n- `tomcat = 8.0.22`\n- `tomcat = 8.0.23`\n- `tomcat = 8.0.24`\n- `tomcat = 8.0.25`\n- `tomcat = 8.0.26`\n- `tomcat = 8.0.27`\n- `tomcat = 8.0.28`\n- `tomcat = 8.0.29`\n- `tomcat = 8.0.30`\n- `tomcat = 8.0.31`\n- `tomcat = 8.0.32`\n- `tomcat = 8.0.33`\n- `tomcat = 8.0.34`\n- `tomcat = 8.0.35`\n- `tomcat = 8.0.36`\n- `tomcat = 8.0.37`\n- `tomcat = 8.0.38`\n- `tomcat = 8.0.39`\n- `tomcat = 8.0.40`\n- `tomcat = 8.0.41`\n- `tomcat = 8.0.42`\n- `tomcat = 8.0.43`\n- `tomcat = 8.0.44`\n- `tomcat = 8.5.0`\n- `tomcat = 8.5.1`\n- `tomcat = 8.5.2`\n- `tomcat = 8.5.3`\n- `tomcat = 8.5.4`\n- `tomcat = 8.5.5`\n- `tomcat = 8.5.6`\n- `tomcat = 8.5.7`\n- `tomcat = 8.5.8`\n- `tomcat = 8.5.9`\n- `tomcat = 8.5.10`\n- `tomcat = 8.5.11`\n- `tomcat = 8.5.12`\n- `tomcat = 8.5.13`\n- `tomcat = 8.5.14`\n- `tomcat = 8.5.15`\n- `tomcat = 9.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":25,"depthScoreParts":{"impact":23.7,"likelihood":1.6,"exploitation":0,"ransomware":0},"changes":[{"seq":222581,"id":"CVE-2017-7674","ts":1792084749277,"field":"cvss","old":null,"new":"4.3"},{"seq":222580,"id":"CVE-2017-7674","ts":1792084749277,"field":"severity","old":"none","new":"medium"}]}