What’s Vulnerable › Vulnerabilities

CVE-2022-31151: Uncleared cookies on cross-host/cross-origin redirect in undici

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-07-21 · updated 2026-06-17
• Weakness: CWE-601

Description

Authorization headers are cleared on cross-origin redirect. However, cookie headers which are sensitive headers and are official headers found in the spec, remain uncleared. There are active users using cookie headers in undici. This may lead to accidental leakage of cookie to a 3rd-party site or a malicious attacker who can control the redirection target (ie. an open redirector) to leak the cookie to the 3rd party site. This was patched in v5.7.1. By default, this vulnerability is not exploitable. Do not enable redirections, i.e. `maxRedirections: 0` (the default).

Affected products

• undici: before 5.7.1 — fixed in 5.7.1

How to fix

Upgrade to a fixed version: undici 5.7.1. Check the vendor advisory for mitigations.

References

• https://github.com/nodejs/undici/issues/872
• https://github.com/nodejs/undici/security/advisories/GHSA-q768-x9m6-m9qp
• https://hackerone.com/reports/1635514
• https://security.netapp.com/advisory/ntap-20220909-0006/
• https://github.com/nodejs/undici/issues/872
• https://github.com/nodejs/undici/security/advisories/GHSA-q768-x9m6-m9qp
• https://hackerone.com/reports/1635514
• https://security.netapp.com/advisory/ntap-20220909-0006/

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