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Vulnerability · Published Sep 6, 2022 · Assigned by GitHub_M

CVE-2022-36032ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent

Medium 5.3

In plain English

A medium-severity improper input validation in http from reactphp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)1.2%top 31.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistreact/http1.7.0GHSA-w3w9-vrf5-8mx8
Ubuntu:22.04:LTSicinga-php-thirdpartyno fix listedUBUNTU-CVE-2022-36032
Ubuntu:24.04:LTSicinga-php-thirdpartyno fix listedUBUNTU-CVE-2022-36032
Ubuntu:25.10icinga-php-thirdpartyno fix listedUBUNTU-CVE-2022-36032
Ubuntu:26.04:LTSicinga-php-thirdpartyno fix listedUBUNTU-CVE-2022-36032
Ubuntu:26.10icinga-php-thirdpartyno fix listedUBUNTU-CVE-2022-36032
Ubuntu:22.04:LTSicingaweb2-module-reactbundleno fix listedUBUNTU-CVE-2022-36032
Ubuntu:24.04:LTSicingaweb2-module-reactbundleno fix listedUBUNTU-CVE-2022-36032
Ubuntu:25.10icingaweb2-module-reactbundleno fix listedUBUNTU-CVE-2022-36032
Ubuntu:26.04:LTSicingaweb2-module-reactbundleno fix listedUBUNTU-CVE-2022-36032
Ubuntu:26.10icingaweb2-module-reactbundleno fix listedUBUNTU-CVE-2022-36032

Affected products (as reported)

VendorProductVersions
reactphp http >= 0.7.0, < 1.7.0

Weakness: CWE-20, CWE-565 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References