CVE-2023-45648
Detail
Modified After Enrichment
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-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
View Analysis Description
Analysis
Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0 Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
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Change History
12 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 2:28:59 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
[{"vendor":"apache","product":"tomcat","defaultStatus":"unknown","cpes":["cpe:2.3:a:apache:tomcat:-:*:*:*:*:*:*:*"],"versions":[{"version":"11.0.0-m1","lessThanOrEqual":"11.0.0-m11","versionType":"semver","status":"affected"},{"version":"10.1.0-m1","lessThanOrEqual":"10.1.13","versionType":"semver","status":"affected"},{"version":"9.0.0-m1","lessThanOrEqual":"9.0.81","versionType":"semver","status":"affected"},{"version":"8.5.0","lessThanOrEqual":"8.5.93","versionType":"semver","status":"affected"}]}]
|
| Added |
SSVC |
{"timestamp":"2025-06-16T16:59:12.136875Z","id":"CVE-2023-45648","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by Apache Software Foundation
6/17/2026 2:28:59 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","defaultStatus":"unaffected","versions":[{"version":"11.0.0-M1","lessThanOrEqual":"11.0.0-M11","versionType":"semver","status":"affected"},{"version":"10.1.0-M1","lessThanOrEqual":"10.1.13","versionType":"semver","status":"affected"},{"version":"9.0.0-M1","lessThanOrEqual":"9.0.81","versionType":"semver","status":"affected"},{"version":"8.5.0","lessThanOrEqual":"8.5.93","versionType":"semver","status":"affected"},{"version":"3","lessThan":"8.5.0","versionType":"semver","status":"unknown"},{"version":"10.0.0-M1","lessThanOrEqual":"10.0.27","versionType":"semver","status":"unknown"}]}]
|
CVE Modified by Apache Software Foundation
8/07/2025 7:15:27 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-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
|
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
|
| Removed |
Reference |
http://www.openwall.com/lists/oss-security/2023/10/10/10
|
| Removed |
Reference |
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html
|
| Removed |
Reference |
https://security.netapp.com/advisory/ntap-20231103-0007/
|
| Removed |
Reference |
https://www.debian.org/security/2023/dsa-5521
|
| Removed |
Reference |
https://www.debian.org/security/2023/dsa-5522
|
| Removed |
Reference Type |
http://www.openwall.com/lists/oss-security/2023/10/10/10 Types: Mailing List, Third Party Advisory
|
| Removed |
Reference Type |
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html Types: Mailing List, Third Party Advisory
|
| Removed |
Reference Type |
https://www.debian.org/security/2023/dsa-5521 Types: Third Party Advisory
|
| Removed |
Reference Type |
https://www.debian.org/security/2023/dsa-5522 Types: Third Party Advisory
|
CVE Modified by CISA-ADP
6/16/2025 1:15:27 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
|
CVE Modified by Apache Software Foundation
2/13/2025 1:15:31 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-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
|
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
|
CVE Modified by CVE
11/21/2024 3:27:08 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
http://www.openwall.com/lists/oss-security/2023/10/10/10
|
| Added |
Reference |
https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp
|
| Added |
Reference |
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html
|
| Added |
Reference |
https://security.netapp.com/advisory/ntap-20231103-0007/
|
| Added |
Reference |
https://www.debian.org/security/2023/dsa-5521
|
| Added |
Reference |
https://www.debian.org/security/2023/dsa-5522
|
CVE Modified by Apache Software Foundation
5/14/2024 9:52:14 AM
| Action |
Type |
Old Value |
New Value |
CVE Modified by Apache Software Foundation
11/04/2023 2:15:52 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://security.netapp.com/advisory/ntap-20231103-0007/ [No Types Assigned]
|
Initial Analysis by NIST
10/16/2023 11:43:48 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
|
| Added |
CWE |
NIST NVD-CWE-Other
|
| Added |
CPE Configuration |
Record truncated, showing 2048 of 3797 characters.
View Entire Change Record
OR
*cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 8.5.0 up to (excluding) 8.5.94
*cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* versions from (including) 9.0.1 up to (excluding) 9.0.81
*cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:10.1.0:milestone10:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:10.1.0:milestone11:*:*:*:*:*:*
*cpe:2.3:a:apache:tomcat:10.1.0:milestone
|
| Added |
CPE Configuration |
OR
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
|
| Changed |
Reference Type |
http://www.openwall.com/lists/oss-security/2023/10/10/10 No Types Assigned
|
http://www.openwall.com/lists/oss-security/2023/10/10/10 Mailing List, Third Party Advisory
|
| Changed |
Reference Type |
https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp No Types Assigned
|
https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp Vendor Advisory
|
| Changed |
Reference Type |
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html No Types Assigned
|
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html Mailing List, Third Party Advisory
|
| Changed |
Reference Type |
https://www.debian.org/security/2023/dsa-5521 No Types Assigned
|
https://www.debian.org/security/2023/dsa-5521 Third Party Advisory
|
| Changed |
Reference Type |
https://www.debian.org/security/2023/dsa-5522 No Types Assigned
|
https://www.debian.org/security/2023/dsa-5522 Third Party Advisory
|
CVE Modified by Apache Software Foundation
10/13/2023 12:15:13 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html [No Types Assigned]
|
CVE Modified by Apache Software Foundation
10/11/2023 3:15:11 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://www.debian.org/security/2023/dsa-5521 [No Types Assigned]
|
| Added |
Reference |
https://www.debian.org/security/2023/dsa-5522 [No Types Assigned]
|
CVE Modified by Apache Software Foundation
10/10/2023 5:15:09 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
http://www.openwall.com/lists/oss-security/2023/10/10/10 [No Types Assigned]
|
Quick Info
CVE Dictionary Entry: CVE-2023-45648 NVD
Published Date: 10/10/2023 NVD
Last Modified: 06/17/2026
Source: Apache Software Foundation
|
