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on-headers (npm)

Execute a listener when a response is about to write headers.

Advisories
2
Latest version
1.1.0
Released Jul 17, 2025
License
MIT
OpenSSF Scorecard
5.6 / 10

How to fix

Upgrading to 1.1.0 or later clears every advisory below that has a fix.

Upgrade commands
npm
npm install on-headers@1.1.0
yarn
yarn add on-headers@1.1.0
pnpm
pnpm add on-headers@1.1.0

Known vulnerabilities

AdvisorySeverityAffectedFixed in
GHSA-76c9-3jph-rj3q
on-headers is vulnerable to http response header manipulation
 Low
EPSS 0.21%
< 1.1.0
1.1.0
GHSA-76c9-3jph-rj3q
on-headers is vulnerable to http response header manipulation
 Low
EPSS 0.21%
< 1.1.0
1.1.0

Source: git+https://github.com/jshttp/on-headers.git

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