TI-2021-05519 Aliases CVE-2021-22565 GHSA-wx8q-rgfr-cf6v

Insufficient Granularity of Access Control in GAEN Notification Server

LOW 29CWE-284Published 2021-12-09 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

An attacker could prematurely expire a verification code, making it unusable by the patient, making the patient unable to upload their TEKs to generate exposure notifications. We recommend upgrading the Exposure Notification server to V1.1.2 or greater.

Why it matters now

EPSS 0.0044 38th percentileScored 2026-11-07

Fix Fixed Google Exposure-notifications-verification-server (Google LLC): 1.1.2github.com/google/exposure-notifications-verification-server (Go): 1.1.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	Google Exposure-notifications-verification-server	before 1.1.2	1.1.2	Patch available	CNA
—	github.com/google/exposure-notifications-verification-server (Go)	before 1.1.2	1.1.2	Patch available	GHSA-wx8q-rgfr-cf6v

Google Exposure-notifications-verification-server VendorGoogle Affected before 1.1.2 Fixed in 1.1.2 Patch available CNA
github.com/google/exposure-notifications-verification-server (Go) Vendor— Affected before 1.1.2 Fixed in 1.1.2 Patch available GHSA-wx8q-rgfr-cf6v

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:google:exposure_notification_verification_server::::::::	before 1.1.2	Vulnerable	Google

cpe:2.3:a:google:exposure_notification_verification_server:*:*:*:*:*:*:*:* Versions before 1.1.2 Vulnerable ·Google

Remediation

Fix · CNA Google Exposure-notifications-verification-server (Google LLC) Fixed in 1.1.2
Fix · GHSA-wx8q-rgfr-cf6v github.com/google/exposure-notifications-verification-server (Go) Fixed in 1.1.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-22565
2026-10-03 Alias added: GHSA-wx8q-rgfr-cf6v

References

Patch 1

https://github.com/google/exposure-notifications-verification-server/releases/tag/v1.1.2

Advisory 2

Other 1

https://github.com/google/exposure-notifications-verification-server

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences