CVE-2022-31043
Guzzle is an open source PHP HTTP client.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Guzzle is an open source PHP HTTP client. In affected versions `Authorization` headers on requests are sensitive information. On making a request using the `https` scheme to a server which responds with a redirect to a URI with the `http` scheme, we should not forward the `Authorization` header on. This is much the same as to how we don't forward on the header if the host changes. Prior to this fix, `https` to `http` downgrades did not result in the `Authorization` header being removed, only changes to the host. Affected Guzzle 7 users should upgrade to Guzzle 7.4.4 as soon as possible. Affected users using any earlier series of Guzzle should upgrade to Guzzle 6.5.7 or 7.4.4. Users unable to upgrade may consider an alternative approach which would be to use their own redirect middleware. Alternately users may simply disable redirects all together if redirects are not expected or required.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.96% probability · 80th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-212
- Affected
- guzzlephp/guzzle · drupal/drupal · debian/debian linux
- Source
- security-advisories@github.com
EPSS 2.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/guzzle/guzzle/commit/e3ff079b22820c2029d4c2a87796b6a0b8716ad8Patch, Third Party Advisory
- https://github.com/guzzle/guzzle/security/advisories/GHSA-w248-ffj2-4v5qThird Party Advisory
- https://www.debian.org/security/2022/dsa-5246Third Party Advisory
- https://www.drupal.org/sa-core-2022-011Patch, Third Party Advisory
- https://www.rfc-editor.org/rfc/rfc9110.html#name-redirection-3xxThird Party Advisory
- https://github.com/guzzle/guzzle/commit/e3ff079b22820c2029d4c2a87796b6a0b8716ad8Patch, Third Party Advisory
- https://github.com/guzzle/guzzle/security/advisories/GHSA-w248-ffj2-4v5qThird Party Advisory
- https://www.debian.org/security/2022/dsa-5246Third Party Advisory
- https://www.drupal.org/sa-core-2022-011Patch, Third Party Advisory
- https://www.rfc-editor.org/rfc/rfc9110.html#name-redirection-3xxThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.