How many CVEs have patched readHpackString?

2 published CVEs changed readHpackString in apache/tomcat, in 3 distinct patches totalling 38 changed lines, between 2020 and 2026.

What is the latest CVE that changed readHpackString?

CVE-2026-41293 (Apache Tomcat: HTTP/2 request headers not validated), published 2026-05-12, changed lines 206 to 249 of java/org/apache/coyote/http2/HpackDecoder.java.

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

apache/tomcat has 135 CVEs with a located fix in total; 2 of them changed readHpackString.

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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apache/tomcat

Function

readHpackString

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

java/org/apache/coyote/http2/HpackDecoder.java

Last patched May 12, 2026

2

CVEs

That changed this function

3

Distinct patches

Backports counted once

38

Lines changed

Added plus removed

2020–2026

Years

By CVE publication date

Overview

readHpackString in apache/tomcat was changed by 2 published CVE fixes between 2020 and 2026, in 3 distinct patches that added or removed 38 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 readHpackString, newest first, with the lines each fix touched.

Apache Tomcat: HTTP/2 request headers not validated
CVE-2026-41293 · lines 206–249 · +22 −6 in 2 hunks
Critical · CVSS 9.8
EPSS 1.7%2026-05-12
Apache Tomcat: Request header mix-up between HTTP/2 streams
CVE-2020-17527 · lines 223–233 · +4 −6
High · CVSS 7.5
EPSS 24.6%2020-12-03

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1decodejava/org/apache/coyote/http2/HpackDecoder.java1 CVEs · 1 patches2026

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 readHpackString.

How many CVEs have patched readHpackString?: 2 published CVEs changed readHpackString in apache/tomcat, in 3 distinct patches totalling 38 changed lines, between 2020 and 2026.
What is the latest CVE that changed readHpackString?: CVE-2026-41293 (Apache Tomcat: HTTP/2 request headers not validated), published 2026-05-12, changed lines 206 to 249 of java/org/apache/coyote/http2/HpackDecoder.java.
How does readHpackString compare to the rest of apache/tomcat?: apache/tomcat has 135 CVEs with a located fix in total; 2 of them changed readHpackString.
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

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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