CVE-2022-31042Network attack vector

Cookie disclosure via unstripped redirect header

Published Jun 9, 2022 · Updated Apr 23, 2025

Information disclosure in Guzzle before 6.5.7 and 7.0.0 through 7.4.3 allows remote attackers to read manually set cookies after redirects. The RedirectMiddleware modifyRequest method forwarded manually supplied Cookie headers because it removed sensitive headers only when the host changed and did not strip Cookie at all. Exposure requires redirect following and either a host change or HTTPS-to-HTTP downgrade, and it discloses the header to the redirect destination.

CVSS severity7.5
High
EPSS probability1.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Guzzle before 6.5.7 and 7.0.0 through 7.4.3 allows remote attackers to read manually set cookies after redirects. The RedirectMiddleware modifyRequest method forwarded manually supplied Cookie headers because it removed sensitive headers only when the host changed and did not strip Cookie at all. Exposure requires redirect following and either a host change or HTTPS-to-HTTP downgrade, and it discloses the header to the redirect destination.

The record

CVE
CVE-2022-31042
Published
Jun 9, 2022
Updated
Apr 23, 2025
Vendor
Guzzle
Product
Guzzle
Classifications
CWE-200, CWE-212
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 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=< 6.5.7
  2. Affected versionversion=>=7.0.0, < 7.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Guzzle · Guzzleversion=< 6.5.7; version=>=7.0.0, < 7.4.4

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-212Improper Removal of Sensitive Information Before Storage or Transfer

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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