Users or API keys with permission to expire verification codes could have expired codes that belonged to another realm if they guessed the UUID.
v1.1.2+
There are no workarounds, and there are no indications this has been exploited in the wild. Verification codes can only be expired by providing their 64-bit UUID, and verification codes are already valid for a very short period of time (thus the UUID rotates frequently).
Contact exposure-notifications-feedback@google.com
{ "nvd_published_at": "2021-12-09T13:15:00Z", "cwe_ids": [ "CWE-284" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2021-11-09T21:03:07Z" }