CVE-2022-4457: WARP client manifest misconfiguration leading to Task Hijacking

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-01-11 · updated 2026-06-17
Weakness: CWE-200

Description

Due to a misconfiguration in the manifest file of the WARP client for Android, it was possible to a perform a task hijacking attack. An attacker could create a malicious mobile application which could hijack legitimate app and steal potentially sensitive information when installed on the victim's device.

Affected products

Cloudflare WARP: before 6.20 — fixed in 6.20

How to fix

Upgrade to a fixed version: Cloudflare WARP 6.20. Check the vendor advisory for mitigations.

References

https://github.com/cloudflare/advisories/security/advisories/GHSA-35f7-fqrc-4hhj
https://github.com/cloudflare/advisories/security/advisories/GHSA-35f7-fqrc-4hhj

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