How many CVEs have patched emitHeader?

3 published CVEs changed emitHeader in apache/tomcat, in 7 distinct patches totalling 29 changed lines, between 2017 and 2026.

What is the latest CVE that changed emitHeader?

CVE-2026-41293 (Apache Tomcat: HTTP/2 request headers not validated), published 2026-05-12, changed lines 331 of java/org/apache/coyote/http2/Stream.java.

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

apache/tomcat has 135 CVEs with a located fix in total; 3 of them changed emitHeader.

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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Patched Functions
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EmitHeader

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Patched Functions
Apache
Tomcat
EmitHeader

emitHeader in apache/tomcat: Patched by 3 CVEs

apache/tomcat

Function

emitHeader

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

java/org/apache/coyote/http2/Stream.java

Last patched May 12, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2017–2026

Years

By CVE publication date

Overview

emitHeader in apache/tomcat was changed by 3 published CVE fixes between 2017 and 2026, in 7 distinct patches that added or removed 29 lines in total.

apache/tomcat has 135 CVEs with a located fix in total, so 2% of them touched this function.

CVEs that patched it

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

On this page

Overview
CVEs that patched it
Other functions in these files
Other hotspots in the repository
FAQ
References

Apache Tomcat: HTTP/2 request headers not validated
CVE-2026-41293 · line 331 · +1 −8
Critical · CVSS 9.8
EPSS 1.7%2026-05-12
Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame
CVE-2025-31650 · lines 453–458 · +6 −0
Medium · CVSS 6.6
EPSS 61.3%2025-04-28
Improper Limitation of a Pathname to a Restricted Directory in Apache Tomcat
CVE-2017-7675 · lines 311–322 · +7 −7
High · CVSS 7.5
EPSS 10.1%2017-08-11

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1decrementAndGetActiveRemoteStreamCountjava/org/apache/coyote/http2/Stream.java1 CVEs · 3 patches2024
2isjava/org/apache/coyote/http2/Stream.java1 CVEs · 3 patches2024
3parseAuthorityjava/org/apache/coyote/http2/Stream.java1 CVEs · 3 patches2026
4doWriteTimeoutjava/org/apache/coyote/http2/Stream.java1 CVEs · 2 patches2019
5reserveWindowSizejava/org/apache/coyote/http2/Stream.java1 CVEs · 1 patches2019

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 emitHeader.

How many CVEs have patched emitHeader?: 3 published CVEs changed emitHeader in apache/tomcat, in 7 distinct patches totalling 29 changed lines, between 2017 and 2026.
What is the latest CVE that changed emitHeader?: CVE-2026-41293 (Apache Tomcat: HTTP/2 request headers not validated), published 2026-05-12, changed lines 331 of java/org/apache/coyote/http2/Stream.java.
How does emitHeader compare to the rest of apache/tomcat?: apache/tomcat has 135 CVEs with a located fix in total; 3 of them changed emitHeader.
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/coyote/http2/Stream.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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