CVE-2021-22565 json
Insufficient Granularity of Access Control in GAEN Notification Server
published 2021-11-10 4 y ago modified 2026-07-08 4 mo ago also GHSA-wx8q-rgfr-cf6v , GO-2022-0270 , EUVD-2021-2409
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
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.
Patch / fix
- go github.com/google/exposure-notifications-verification-server 1.1.2
- Google LLC Google Exposure-notifications-verification-server 1.1.2
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/google/exposure-notifications-verification-server | <1.1.2 |
1.1.2 |
Affected products
- Google LLC Google Exposure-notifications-verification-server
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/google/exposure-notifications-verification-server/releases/tag/v1.1.2
web, patch, release-notes, third-party-advisory
-
github.com
/google/exposure-notifications-verification-server/security/advisories/GHSA-wx8q-rgfr-cf6v
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-22565
advisory
-
github.com
/google/exposure-notifications-verification-server
web
Sources
- CVE List CVE-2021-22565
- GitHub Advisory GHSA-wx8q-rgfr-cf6v
- NVD CVE-2021-22565
- OSV GO-2022-0270
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