CVE-2022-36032: ReactPHP HTTP is a streaming HTTP client and server implementation for ReactPHP

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MEDIUM 5.3REMOTEUPGRADE

CVE-2022-36032 is a medium-severity flaw (CVSS 5.3) affecting http. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-20, CWE-565
Published	2022-09-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: reactphp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-09-06 19:15 UTCPublished CVE record published
2026-06-17 04:52 UTCUpdated Record last modified

reactphp http UPGRADE

Affected: >= 0.7.0 and < 1.7.0

Fixed in: 1.7.0

Safe to downgrade to: a release before 0.7.0

1. Check installed version

apt-cache policy http || rpm -q http || http --version

2. UPGRADE to 1.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade http

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade http

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.7.0 (Debian / Ubuntu)

apt-cache madison http sudo apt install http=<VERSION_BEFORE_0.7.0> sudo apt-mark hold http

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list http sudo dnf downgrade http-<VERSION_BEFORE_0.7.0> sudo dnf versionlock add http

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-36032?

http: upgrade to 1.7.0. Exact commands for each OS are on this page.

Is CVE-2022-36032 being exploited?

CVE-2022-36032 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-36032 affect?

CVE-2022-36032 affects http. Severity is medium (CVSS 5.3). 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

How urgent is CVE-2022-36032?

Priority 40/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-26044 MEDIUM 5.3 UPGRADE react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP

References

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