Description
ReactPHP HTTP is a streaming HTTP client and server implementation for ReactPHP. In ReactPHP's HTTP server component versions starting with 0.7.0 and prior to 1.7.0, 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. This issue is fixed in ReactPHP HTTP version 1.7.0. As a workaround, Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected `Cookie` request headers.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| reactphp | http | >= 0.7.0, < 1.7.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | icinga-php-thirdparty +1 | No fix yet | — |
| Ubuntu 26.04 LTS | icinga-php-thirdparty +1 | No fix yet | — |
| Ubuntu 25.10 | icinga-php-thirdparty +1 | No fix yet | — |
| Ubuntu 24.04 LTS | icinga-php-thirdparty +1 | No fix yet | — |
| Ubuntu 22.04 LTS | icinga-php-thirdparty +1 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | react/http | >= 0.7.0, < 1.7.0 | 1.7.0 | GHSA-w3w9-vrf5-8mx8 |