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CVE-2022-31043

25
FAUCET Score

CVE-2022-31043 is a high-severity vulnerability affecting Guzzle, an open-source PHP HTTP client, and products integrating it like Debian and Drupal. It allows for the sensitive Authorization header to be inadvertently forwarded during HTTPS to HTTP redirect downgrades, potentially exposing credentials. With a CVSS score of 7.5, this network-exploitable flaw has high confidentiality impact and low attack complexity. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.5.7CPE matchmatch criteria
cpe:2.3:a:guzzlephp:guzzle:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.4.4CPE matchmatch criteria
cpe:2.3:a:guzzlephp:guzzle:*:*:*:*:*:*:*:*
>= 9.2.0, < 9.2.21CPE matchmatch criteria
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
>= 9.3.0, < 9.3.16CPE matchmatch criteria
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
9.4.0CPE matchmatch criteria
cpe:2.3:a:drupal:drupal:9.4.0:alpha1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.82%
Probability of exploitation in next 30 days
EPSS Percentile
76.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0182 is in the 59th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: guzzlehttp/guzzleFixed in: 7.4.4
composerpatch availablevia ghsa
Product: guzzlehttp/guzzleFixed in: 6.5.7
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-w248-ffj2-4v5qhigh

Fix failure to strip Authorization header on HTTP downgrade

Jun 9, 2022

References

github.com / guzzle/guzzle/commit/e3ff079b22820c2029d4c2a87796b6a0b8716ad8
PatchThird Party Advisory
github.com / guzzle/guzzle/security/advisories/GHSA-w248-ffj2-4v5q
Third Party Advisory
debian.org / security/2022/dsa-5246
Third Party Advisory
drupal.org / sa-core-2022-011
PatchThird Party Advisory
rfc-editor.org / rfc/rfc9110.html
Third Party Advisory