GHSA-76c9-3jph-rj3q
on-headers is vulnerable to http response header manipulation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | on-headers | < 1.1.0 | 1.1.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
A bug in on-headers versions `< 1.1.0` may result in response headers being inadvertently modified when an array is passed to `response.writeHead()`
### Patches
Users should upgrade to `1.1.0`
### Workarounds
Uses are encouraged to upgrade to `1.1.0`, but this issue can be worked around by passing an object to `response.writeHead()` rather than an array.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/jshttp/on-headers/security/advisories/GHSA-76c9-3jph-rj3q
- https://nvd.nist.gov/vuln/detail/CVE-2025-7339
- https://github.com/expressjs/morgan/issues/315
- https://github.com/jshttp/on-headers/issues/15
- https://github.com/jshttp/on-headers/commit/c6e384908c9c6127d18831d16ab0bd96e1231867
- https://cna.openjsf.org/security-advisories.html
- https://github.com/jshttp/on-headers