ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent
Impact
In ReactPHP's HTTP server component versions below v1.7.0, when ReactPHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host- and __Secure- confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-7070 and CVE-2020-8184 for more information.
Patches
- https://github.com/reactphp/http/commit/663c9a3b77b71463fa7fcb76a6676ffd16979dd6 - Fixed in reactphp/http
v1.7.0
Workarounds
Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected Cookie request headers.
References
- CVE-2020-7070, https://bugs.php.net/bug.php?id=79699 and https://github.com/php/php-src/commit/6559fe912661ca5ce5f0eeeb591d928451428ed0
- CVE-2020-8184, https://hackerone.com/reports/895727 and https://github.com/rack/rack/commit/1f5763de6a9fe515ff84992b343d63c88104654c
- Originally introduced via https://github.com/reactphp/http/pull/175
Credits
- Thanks to Marco Squarcina (TU Wien) for reporting this and working with us to coordinate this security advisory
For more information
If you have any questions or comments about this advisory:
- Join the discussion
- Email us at support@reactphp.org
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | react/http | >= 0.7.0, < 1.7.0 | 1.7.0 |
References
- https://github.com/reactphp/http/security/advisories/GHSA-w3w9-vrf5-8mx8
- https://nvd.nist.gov/vuln/detail/CVE-2022-36032
- https://github.com/reactphp/http/pull/175
- https://github.com/reactphp/http/commit/663c9a3b77b71463fa7fcb76a6676ffd16979dd6
- https://github.com/FriendsOfPHP/security-advisories/blob/master/react/http/CVE-2022-36032.yaml
- https://github.com/reactphp/http
- https://github.com/reactphp/http/releases/tag/v1.7.0
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-20, CWE-565- Platform
- Composer
- Package
react/http- Disclosed
- 16.09.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-w3w9-vrf5-8mx8 - CC BY 4.0
Vulnerability history: react/http
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 09.2022 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 2
Disclosures per year
- 2022: 1
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 1
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ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent this entry
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