How many CVEs have patched DecompressHandler?

2 published CVEs changed DecompressHandler in nodejs/undici, in 3 distinct patches totalling 106 changed lines, between 2026 and 2026.

What is the latest CVE that changed DecompressHandler?

CVE-2026-84890 (undici vulnerable to Denial of Service via unbounded decompression of compressed responses), published 2026-09-04, changed lines 106 to 311 of lib/interceptor/decompress.js.

How does DecompressHandler compare to the rest of nodejs/undici?

nodejs/undici has 32 CVEs with a located fix in total; 2 of them changed DecompressHandler.

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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nodejs/undici

Class

DecompressHandler

Name: DecompressHandler in nodejs/undici: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

lib/interceptor/decompress.js

Last patched September 4, 2026

2

CVEs

That changed this function

3

Distinct patches

Backports counted once

106

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

DecompressHandler in nodejs/undici was changed by 2 published CVE fixes in 2026, in 3 distinct patches that added or removed 106 lines in total.

nodejs/undici has 32 CVEs with a located fix in total, so 6% of them touched this function.

CVEs that patched it

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

undici vulnerable to Denial of Service via unbounded decompression of compressed responses
CVE-2026-84890 · lines 106–311 · +92 −6 in 7 hunks
Medium · CVSS 5.9
EPSS 0.4%2026-09-04
Undici has an unbounded decompression chain in HTTP responses on Node.js Fetch API via Content-Encoding leads to resource exhaustion
CVE-2026-22036 · lines 67–78 · +8 −0
High · CVSS 7.5
EPSS 0.5%2026-01-14

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Other functions in these files

Functions in the same file that CVE fixes also changed.

Other hotspots in the repository

Functions in nodejs/undici changed by the most CVE fixes.

processHeader3 CVEs · lib/core/request.js canCacheResponse2 CVEs · lib/handler/cache-handler.js writeH12 CVEs · lib/dispatcher/client-h1.js httpRedirectFetch2 CVEs · lib/fetch/index.js shouldRetry2 CVEs · lib/handler/retry-handler.js parseCacheControlHeader2 CVEs · lib/util/cache.js

All patched functions in nodejs/undici

Frequently asked questions

Common questions about CVE fixes to DecompressHandler.

How many CVEs have patched DecompressHandler?: 2 published CVEs changed DecompressHandler in nodejs/undici, in 3 distinct patches totalling 106 changed lines, between 2026 and 2026.
What is the latest CVE that changed DecompressHandler?: CVE-2026-84890 (undici vulnerable to Denial of Service via unbounded decompression of compressed responses), published 2026-09-04, changed lines 106 to 311 of lib/interceptor/decompress.js.
How does DecompressHandler compare to the rest of nodejs/undici?: nodejs/undici has 32 CVEs with a located fix in total; 2 of them changed DecompressHandler.
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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