Improper header validation in httpsoft/http-message
Impact
Improper header parsing. An attacker could sneak in a newline (\n) into both the header names and values. While the specification states that \r\n\r\n is used to terminate the header list, many servers in the wild will also accept \n\n.
Patches
The issue is patched in 1.0.12.
Workarounds
There are no known workarounds.
References
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | httpsoft/http-message | < 1.0.12 | 1.0.12 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-436- Platform
- Composer
- Package
httpsoft/http-message- Disclosed
- 21.04.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9jxr-mwpp-w643 - CC BY 4.0
Vulnerability history: httpsoft/http-message
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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