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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Current Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Older, EOL versions may also be affected.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Metrics
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CVE Modified by Apache Software Foundation8/07/2025 7:15:28 AM
Action
Type
Old Value
New Value
Changed
Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Older, EOL versions may also be affected.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
CVE Modified by Apache Software Foundation2/13/2025 1:15:34 PM
Action
Type
Old Value
New Value
Changed
Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
CVE Modified by Apache Software Foundation5/14/2024 9:53:54 AM
Action
Type
Old Value
New Value
CVE Modified by Apache Software Foundation1/05/2024 6:15:09 AM
Action
Type
Old Value
New Value
Added
Reference
Apache Software Foundation https://lists.debian.org/debian-lts-announce/2024/01/msg00001.html [No types assigned]
CVE Modified by Apache Software Foundation12/14/2023 5:15:08 AM
Action
Type
Old Value
New Value
Added
Reference
Apache Software Foundation https://security.netapp.com/advisory/ntap-20231214-0009/ [No types assigned]
Modified Analysis by NIST12/13/2023 4:26:23 PM
Action
Type
Old Value
New Value
Changed
Reference Type
https://www.openwall.com/lists/oss-security/2023/11/28/2 No Types Assigned
https://www.openwall.com/lists/oss-security/2023/11/28/2 Mailing List, Third Party Advisory
CVE Modified by Apache Software Foundation12/05/2023 5:15:07 AM
Action
Type
Old Value
New Value
Added
CWE
Apache Software Foundation CWE-444
Removed
CWE
Apache Software Foundation CWE-20
Added
Reference
Apache Software Foundation https://www.openwall.com/lists/oss-security/2023/11/28/2 [No types assigned]
Removed
Reference
Apache Software Foundation http://www.openwall.com/lists/oss-security/2023/11/28/2
Initial Analysis by NIST12/04/2023 2:11:01 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Added
CWE
NIST CWE-444
Added
CPE Configuration
OR
*cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 8.5.0 up to (excluding) 8.5.96
*cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.83
*cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 10.1.0 up to (excluding) 10.1.16
*cpe:2.3:a:apache:tomcat:11.0.0:milestone1:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone10:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone2:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone3:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone4:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone5:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone6:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone7:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone8:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:11.0.0:milestone9:*:*:*:*:*:*
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2023/11/28/2 No Types Assigned
http://www.openwall.com/lists/oss-security/2023/11/28/2 Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.apache.org/thread/0rqq6ktozqc42ro8hhxdmmdjm1k1tpxr No Types Assigned
CVE Modified by Apache Software Foundation11/28/2023 1:15:08 PM
Action
Type
Old Value
New Value
Added
Reference
Apache Software Foundation http://www.openwall.com/lists/oss-security/2023/11/28/2 [No types assigned]
New CVE Received from Apache Software Foundation11/28/2023 11:15:06 AM
Action
Type
Old Value
New Value
Added
Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.
Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Added
CWE
Apache Software Foundation CWE-20
Added
Reference
Apache Software Foundation https://lists.apache.org/thread/0rqq6ktozqc42ro8hhxdmmdjm1k1tpxr [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2023-46589 NVD
Published Date: 11/28/2023 NVD
Last Modified: 08/07/2025
Source: Apache Software Foundation
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