How many CVEs have patched containsKey?

1 published CVEs changed containsKey in apache/tomcat, in 3 distinct patches totalling 16 changed lines, between 2026 and 2026.

What is the latest CVE that changed containsKey?

CVE-2026-42498 (Apache Tomcat: WebSocket authentication header exposure), published 2026-05-12, changed lines 246 to 262 of java/org/apache/tomcat/websocket/WsWebSocketContainer.java.

How does containsKey compare to the rest of apache/tomcat?

apache/tomcat has 135 CVEs with a located fix in total; 1 of them changed containsKey.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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ContainsKey

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Patched Functions
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Tomcat
ContainsKey

containsKey in apache/tomcat: Patched by 1 CVEs

apache/tomcat

Function

containsKey

Name: containsKey in apache/tomcat: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

java/org/apache/tomcat/websocket/WsWebSocketContainer.java

Last patched May 12, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

containsKey in apache/tomcat was changed by 1 published CVE fixes in 2026, in 3 distinct patches that added or removed 16 lines in total.

apache/tomcat has 135 CVEs with a located fix in total, so 1% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed containsKey, newest first, with the lines each fix touched.

Apache Tomcat: WebSocket authentication header exposure
CVE-2026-42498 · lines 246–262 · +9 −7
High · CVSS 7.3
EPSS 0.6%2026-05-12

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1connectToServerRecursivejava/org/apache/tomcat/websocket/WsWebSocketContainer.java2 CVEs · 5 patches2018 to 2026
2backgroundProcessjava/org/apache/tomcat/websocket/WsWebSocketContainer.java1 CVEs · 4 patches2024
3synchronizedjava/org/apache/tomcat/websocket/WsWebSocketContainer.java1 CVEs · 4 patches2024
4processAuthenticationChallengejava/org/apache/tomcat/websocket/WsWebSocketContainer.java1 CVEs · 3 patches2026
5createSSLEnginejava/org/apache/tomcat/websocket/WsWebSocketContainer.java1 CVEs · 2 patches2018

Other hotspots in the repository

Functions in apache/tomcat changed by the most CVE fixes.

fixDocBase5 CVEs · java/org/apache/catalina/startup/ContextConfig.java expand5 CVEs · java/org/apache/catalina/startup/ExpandWar.java validate5 CVEs · java/org/apache/catalina/startup/ExpandWar.java invoke4 CVEs · java/org/apache/catalina/authenticator/AuthenticatorBase.java parseParts4 CVEs · java/org/apache/catalina/connector/Request.java parseChunkHeader4 CVEs · java/org/apache/coyote/http11/filters/ChunkedInputFilter.java

All patched functions in apache/tomcat

Frequently asked questions

Common questions about CVE fixes to containsKey.

How many CVEs have patched containsKey?: 1 published CVEs changed containsKey in apache/tomcat, in 3 distinct patches totalling 16 changed lines, between 2026 and 2026.
What is the latest CVE that changed containsKey?: CVE-2026-42498 (Apache Tomcat: WebSocket authentication header exposure), published 2026-05-12, changed lines 246 to 262 of java/org/apache/tomcat/websocket/WsWebSocketContainer.java.
How does containsKey compare to the rest of apache/tomcat?: apache/tomcat has 135 CVEs with a located fix in total; 1 of them changed containsKey.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

java/org/apache/tomcat/websocket/WsWebSocketContainer.java on GitHub (opens in a new tab)
All patched functions in apache/tomcat
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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Overview
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