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NVD Vulnerability Details :
CVE-2026-42498
Analyzed
More InfoOfficial Page
Source-security@apache.org
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 16:16
Updated At-14 May, 2026 | 18:51

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Type: Secondary
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CPE Matches
The Apache Software Foundation
apache
>>tomcat>>Versions from 7.0.0(inclusive) to 7.0.109(inclusive)
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
The Apache Software Foundation
apache
>>tomcat>>Versions from 8.5.0(inclusive) to 8.5.100(inclusive)
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
The Apache Software Foundation
apache
>>tomcat>>Versions from 9.0.0(inclusive) to 9.0.118(exclusive)
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
The Apache Software Foundation
apache
>>tomcat>>Versions from 10.1.0(inclusive) to 10.1.55(exclusive)
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
The Apache Software Foundation
apache
>>tomcat>>Versions from 11.0.0(inclusive) to 11.0.22(exclusive)
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-200Secondarysecurity@apache.org
CWE ID: CWE-200
Type: Secondary
Source: security@apache.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://lists.apache.org/thread/n61zwf75jrv09rz90j4jssncm244bwdbsecurity@apache.org
Mailing List
Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/12/14af854a3a-2127-422b-91ae-364da2661108
Mailing List
Third Party Advisory
Hyperlink: https://lists.apache.org/thread/n61zwf75jrv09rz90j4jssncm244bwdb
Source: security@apache.org
Resource:
Mailing List
Vendor Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2026/05/12/14
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List
Third Party Advisory
Change History
0Changes found
Details not found