CVE-2023-3747: Insufficient Validation on Override Codes for Always-Enabled WARP Mode

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: 2023-09-07 · updated 2026-06-17
Weakness: CWE-602

Description

Zero Trust Administrators have the ability to disallow end users from disabling WARP on their devices. Override codes can also be created by the Administrators to allow a device to temporarily be disconnected from WARP, however, due to lack of server side validation, an attacker with local access to the device, could extend the maximum allowed disconnected time of WARP client granted by an override code by changing the date & time on the local device where WARP is running.

Affected products

Cloudflare WARP: 6.29

References

https://developers.cloudflare.com/cloudflare-one/connections/connect-devices/warp/configure-warp/warp-settings/#retrieve-the-override-code
https://play.google.com/store/apps/details?id=com.cloudflare.onedotonedotonedotone
https://developers.cloudflare.com/cloudflare-one/connections/connect-devices/warp/configure-warp/warp-settings/#retrieve-the-override-code
https://play.google.com/store/apps/details?id=com.cloudflare.onedotonedotonedotone

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