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CVE-2017-7674

21
FAUCET Score

CVE-2017-7674 is a cache poisoning vulnerability affecting Apache Tomcat versions 9.0.0.M1-M21, 8.5.0-8.5.15, 8.0.0.RC1-8.0.44, and 7.0.41-7.0.78. The CORS Filter failed to include an HTTP Vary header, allowing client and server-side cache poisoning. Rated as Medium severity (CVSS 4.3), it requires user interaction and could lead to information integrity issues. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.41CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.41:*:*:*:*:*:*:*
7.0.42CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.42:*:*:*:*:*:*:*
7.0.43CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.43:*:*:*:*:*:*:*
7.0.44CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.44:*:*:*:*:*:*:*
7.0.45CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:7.0.45:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.04%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0804 is in the 98th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (18)

mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 7.0.79
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 8.5.16
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 8.0.45
mavenpatch availablevia ghsa
Product: org.apache.tomcat:tomcatFixed in: 9.0.0.M22
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat7-0:7.0.70-22.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat8-0:8.0.36-24.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat7-0:7.0.70-22.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat8-0:8.0.36-24.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat-native-0:1.2.8-10.redhat_10.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat-native-0:1.2.8-10.redhat_10.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: tomcat-0:7.0.76-3.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el6
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat JBoss Fuse 6Fixed in: tomcat7
redhatvendor investigatingvia redhat_api
Product: Red Hat JBoss Fuse 6Fixed in: tomcat8
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: tomcat6
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: tomcat7

Vendor Advisories (2)

mavenGHSA-73rx-3f9r-x949medium

Insufficient Verification of Data Authenticity in Apache Tomcat

May 14, 2022
redhatCVE-2017-7674Moderate

tomcat: Vary header not added by CORS filter leading to cache poisoning

Aug 10, 2017

References

access.redhat.com / errata/RHSA-2017:1801
access.redhat.com / errata/RHSA-2017:1802
access.redhat.com / errata/RHSA-2017:3081
lists.apache.org / thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/22b4bb077502f847e2b9fcf00b96e81e734466ab459780ff73b60c0f%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org / thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/r15695e6203b026c9e9070ca9fa95fb17dd4cd88e5342a7dc5e1e7b85%40%3Cusers.tomcat.apache.org%3E
lists.apache.org / thread.html/r1c62634b7426bee5f553307063457b99c84af73b078ede4f2592b34e%40%3Cusers.tomcat.apache.org%3E
lists.apache.org / thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/r409efdf706c2077ae5c37018a87da725a3ca89570a9530342cdc53e4%40%3Cusers.tomcat.apache.org%3E
lists.apache.org / thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E
lists.debian.org / debian-lts-announce/2018/06/msg00008.html
security.netapp.com / advisory/ntap-20180614-0003
support.hpe.com / hpsc/doc/public/display
debian.org / security/2017/dsa-3974
oracle.com / technetwork/security-advisory/cpuapr2018-3678067.html
securityfocus.com / bid/100280
Third Party AdvisoryVDB Entry