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TI-2022-16457 Aliases CVE-2022-36032GHSA-w3w9-vrf5-8mx8

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

Priority LOW 32CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01206 68th percentileScored 2026-11-07
Fix Fixed http (reactphp): 1.7.0react/http (Packagist): 1.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
reactphphttp0.7.0 to before 1.7.01.7.0Patch availableCNA
—react/http (Packagist)0.7.0 to before 1.7.01.7.0Patch availableGHSA-w3w9-vrf5-8mx8
  • http Vendorreactphp Affected 0.7.0 to before 1.7.0 Fixed in 1.7.0 Patch available CNA
  • react/http (Packagist) Vendor— Affected 0.7.0 to before 1.7.0 Fixed in 1.7.0 Patch available GHSA-w3w9-vrf5-8mx8

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:reactphp:http:*:*:*:*:*:*:*:*0.7.0 to before 1.7.0Vulnerablereactphp
  • cpe:2.3:a:reactphp:http:*:*:*:*:*:*:*:* Versions 0.7.0 to before 1.7.0 Vulnerable ·reactphp

Remediation

  • Fix · CNA http (reactphp) Fixed in 1.7.0
  • Fix · GHSA-w3w9-vrf5-8mx8 react/http (Packagist) Fixed in 1.7.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-36032
  2. 2026-10-03 Alias added: GHSA-w3w9-vrf5-8mx8

References

Patch 3

Advisory 2

Other 2

  • TI-2023-11278 ReactPHP's HTTP server continues parsing unused multipart parts after reaching limits CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences