CVE-2022-36032Network attack vector

Cookie forgery via URL-decoded cookie names

Published Sep 6, 2022 · Updated Apr 23, 2025

Cookie validation failure in ReactPHP HTTP 0.7.0 through 1.6.0 allows remote attackers to forge security-prefixed cookies. The ServerRequest::parseCookie method URL-decodes each incoming cookie name, so an encoded name becomes __Host- or __Secure- after browser prefix checks. Exploitation requires an application that trusts those reserved prefixes; the result is attacker-controlled cookie state with reduced integrity guarantees.

CVSS severity5.3
Medium
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cookie validation failure in ReactPHP HTTP 0.7.0 through 1.6.0 allows remote attackers to forge security-prefixed cookies. The ServerRequest::parseCookie method URL-decodes each incoming cookie name, so an encoded name becomes __Host- or __Secure- after browser prefix checks. Exploitation requires an application that trusts those reserved prefixes; the result is attacker-controlled cookie state with reduced integrity guarantees.

The record

CVE
CVE-2022-36032
Published
Sep 6, 2022
Updated
Apr 23, 2025
Vendor
ReactPHP
Product
ReactPHP HTTP
Classifications
CWE-20, CWE-565
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.7.0, < 1.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ReactPHP · ReactPHP HTTPversion=>= 0.7.0, < 1.7.0

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-565Reliance on Cookies without Validation and Integrity Checking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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