tomcat: Vary header not added by CORS filter leading to cache poisoning
Published Aug 11, 2017
5.9
MEDIUMCVSS 3.0
EPSS 8.04%
Description
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 side cache poisoning in some circumstances.
Affected products
-
- Version 7.0.41 to 7.0.78StatusaffectedConstraints-
- Version 8.0.0.RC1 to 8.0.44StatusaffectedConstraints-
- Version 8.5.0 to 8.5.15StatusaffectedConstraints-
- Version 9.0.0.M1 to 9.0.0.M21StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | n/a |
|
- 7.0.41
- 7.0.42
- 7.0.43
- 7.0.44
- 7.0.45
- 7.0.46
- 7.0.47
- 7.0.48
- 7.0.49
- 7.0.50
- 7.0.52
- 7.0.53
- 7.0.54
- 7.0.55
- 7.0.56
- 7.0.57
- 7.0.58
- 7.0.59
- 7.0.60
- 7.0.61
- 7.0.62
- 7.0.63
- 7.0.64
- 7.0.65
- 7.0.66
- 7.0.67
- 7.0.68
- 7.0.69
- 7.0.70
- 7.0.71
- 7.0.72
- 7.0.73
- 7.0.74
- 7.0.75
- 7.0.76
- 7.0.77
- 7.0.78
- 8.0
- 8.0.0
- 8.0.0
- 8.0.0
- 8.0.0
- 8.0.1
- 8.0.2
- 8.0.3
- 8.0.4
- 8.0.5
- 8.0.6
- 8.0.7
- 8.0.8
- 8.0.9
- 8.0.10
- 8.0.11
- 8.0.12
- 8.0.13
- 8.0.14
- 8.0.15
- 8.0.16
- 8.0.17
- 8.0.18
- 8.0.19
- 8.0.20
- 8.0.21
- 8.0.22
- 8.0.23
- 8.0.24
- 8.0.25
- 8.0.26
- 8.0.27
- 8.0.28
- 8.0.29
- 8.0.30
- 8.0.31
- 8.0.32
- 8.0.33
- 8.0.34
- 8.0.35
- 8.0.36
- 8.0.37
- 8.0.38
- 8.0.39
- 8.0.40
- 8.0.41
- 8.0.42
- 8.0.43
- 8.0.44
- 8.5.0
- 8.5.1
- 8.5.2
- 8.5.3
- 8.5.4
- 8.5.5
- 8.5.6
- 8.5.7
- 8.5.8
- 8.5.9
- 8.5.10
- 8.5.11
- 8.5.12
- 8.5.13
- 8.5.14
- 8.5.15
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
- 9.0.0
No data.
Red Hat Enterprise Linux 7
tomcat-0:7.0.76-3.el7_4
Fixed · RHSA-2017:3081
Red Hat JBoss Web Server 3 for RHEL 6
log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el6
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 6
tomcat-native-0:1.2.8-10.redhat_10.ep7.el6
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 6
tomcat7-0:7.0.70-22.ep7.el6
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 6
tomcat8-0:8.0.36-24.ep7.el6
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 7
log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el7
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 7
tomcat-native-0:1.2.8-10.redhat_10.ep7.el7
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 7
tomcat7-0:7.0.70-22.ep7.el7
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3 for RHEL 7
tomcat8-0:8.0.36-24.ep7.el7
Fixed · RHSA-2017:1801
Red Hat JBoss Web Server 3.1
n/a
Fixed · RHSA-2017:1802
Red Hat Enterprise Linux 6
tomcat6
Not affected
Red Hat JBoss Data Grid 6
jbossweb
Not affected
Red Hat JBoss Data Virtualization 6
jbossweb
Not affected
Red Hat JBoss Enterprise Application Platform 6
jbossweb
Not affected
Red Hat JBoss Enterprise Web Server 2
tomcat6
Will not fix
Red Hat JBoss Enterprise Web Server 2
tomcat7
Will not fix
Red Hat JBoss Fuse 6
jbossweb
Not affected
Red Hat JBoss Fuse 6
tomcat7
Under investigation
Red Hat JBoss Fuse 6
tomcat8
Under investigation
Red Hat JBoss Fuse Service Works 6
jbossweb
Not affected
Red Hat JBoss Operations Network 3
jbossweb
Not affected
Red Hat JBoss Portal 6
jbossweb
Not affected
Red Hat Software Collections
rh-java-common-tomcat
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | tomcat-0:7.0.76-3.el7_4 | Fixed | RHSA-2017:3081 |
| Red Hat JBoss Web Server 3 for RHEL 6 | log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el6 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat-native-0:1.2.8-10.redhat_10.ep7.el6 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat7-0:7.0.70-22.ep7.el6 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat8-0:8.0.36-24.ep7.el6 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 7 | log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el7 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat-native-0:1.2.8-10.redhat_10.ep7.el7 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat7-0:7.0.70-22.ep7.el7 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat8-0:8.0.36-24.ep7.el7 | Fixed | RHSA-2017:1801 |
| Red Hat JBoss Web Server 3.1 | n/a | Fixed | RHSA-2017:1802 |
| Red Hat Enterprise Linux 6 | tomcat6 | Not affected | n/a |
| Red Hat JBoss Data Grid 6 | jbossweb | Not affected | n/a |
| Red Hat JBoss Data Virtualization 6 | jbossweb | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | jbossweb | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | tomcat6 | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 2 | tomcat7 | Will not fix | n/a |
| Red Hat JBoss Fuse 6 | jbossweb | Not affected | n/a |
| Red Hat JBoss Fuse 6 | tomcat7 | Under investigation | n/a |
| Red Hat JBoss Fuse 6 | tomcat8 | Under investigation | n/a |
| Red Hat JBoss Fuse Service Works 6 | jbossweb | Not affected | n/a |
| Red Hat JBoss Operations Network 3 | jbossweb | Not affected | n/a |
| Red Hat JBoss Portal 6 | jbossweb | Not affected | n/a |
| Red Hat Software Collections | rh-java-common-tomcat | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (42 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.04% (0.08037) | 94.62th | v5 (v2026.06.15) |
| Jun 28, 2026 | 8.04% (0.08037) | 94.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.84% (0.06837) | 93.17th | v5 (v2026.06.15) |
| Mar 4, 2026 | 5.92% (0.05920) | 90.44th | v4 (v2025.03.14) |
| Mar 1, 2026 | 3.55% (0.03550) | 87.51th | v4 (v2025.03.14) |
| Feb 4, 2026 | 5.92% (0.05920) | 90.38th | v4 (v2025.03.14) |
| Feb 1, 2026 | 3.55% (0.03550) | 87.44th | v4 (v2025.03.14) |
| Jan 7, 2026 | 5.92% (0.05920) | 90.32th | v4 (v2025.03.14) |
| Jan 4, 2026 | 4.62% (0.04620) | 88.92th | v4 (v2025.03.14) |
| Jan 1, 2026 | 2.72% (0.02721) | 85.57th | v4 (v2025.03.14) |
| Dec 4, 2025 | 4.62% (0.04620) | 88.85th | v4 (v2025.03.14) |
| Dec 1, 2025 | 2.72% (0.02721) | 85.50th | v4 (v2025.03.14) |
| Nov 21, 2025 | 4.62% (0.04620) | 88.78th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.62% (0.02623) | 84.36th | v4 (v2025.03.14) |
| Nov 4, 2025 | 4.62% (0.04620) | 88.76th | v4 (v2025.03.14) |
| Nov 1, 2025 | 2.72% (0.02721) | 85.46th | v4 (v2025.03.14) |
| Oct 4, 2025 | 4.09% (0.04091) | 88.09th | v4 (v2025.03.14) |
| Oct 1, 2025 | 2.47% (0.02471) | 84.76th | v4 (v2025.03.14) |
| Sep 4, 2025 | 4.09% (0.04091) | 88.14th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.47% (0.02471) | 84.77th | v4 (v2025.03.14) |
| Aug 4, 2025 | 4.09% (0.04091) | 88.14th | v4 (v2025.03.14) |
| Aug 1, 2025 | 2.47% (0.02471) | 84.74th | v4 (v2025.03.14) |
| Jul 4, 2025 | 4.09% (0.04091) | 88.09th | v4 (v2025.03.14) |
| Jul 1, 2025 | 2.47% (0.02471) | 84.65th | v4 (v2025.03.14) |
| Jun 4, 2025 | 4.62% (0.04620) | 88.73th | v4 (v2025.03.14) |
| Jun 1, 2025 | 2.72% (0.02721) | 85.27th | v4 (v2025.03.14) |
| May 4, 2025 | 4.62% (0.04620) | 88.64th | v4 (v2025.03.14) |
| May 1, 2025 | 2.72% (0.02721) | 85.17th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.25% (0.04255) | 87.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.50% (0.07501) | 86.02th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.39% (0.05391) | 89.41th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.28% (0.00276) | 69.02th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00276) | 67.25th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.28% (0.00276) | 64.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.48% (0.00481) | 72.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.24% (0.05242) | 89.75th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.24% (0.05242) | 88.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.24% (0.05242) | 75.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 16.12% (0.16121) | 90.21th | v1 |
| Jan 6, 2022 | 16.12% (0.16121) | 90.10th | v1 |
| Sep 1, 2021 | 16.12% (0.16121) | 97.34th | v1 |
| Apr 14, 2021 | 16.12% (0.16121) | 0.00th | v1 |
References (64)
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- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html x_refsource_CONFIRM
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- https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424@%3Cdev.tomcat.apache.org%3E
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- https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E
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- https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661@%3Cdev.tomcat.apache.org%3E
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- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
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- https://tomcat.apache.org/security-7.html
- https://tomcat.apache.org/security-8.html
- https://web.archive.org/web/20171115015045/http://www.securityfocus.com/bid/100280
- https://web.archive.org/web/20210116171055/http://www.securityfocus.com/bid/100280
- https://www.cve.org/CVERecord?id=CVE-2017-7674
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