CVE-2021-22573

Name: CVE-2021-22573
Creator: NVD / NIST
Published: 2022-05-03T16:15:18.7+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2021-22573 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. The vulnerability is that IDToken verifier does not verify if token is properly signed. Signature verification makes sure that the token's payload comes from valid provider, not from someone else. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

The vulnerability is that IDToken verifier does not verify if token is properly signed. Signature verification makes sure that the token's payload comes from valid provider, not from someone else. An attacker can provide a compromised token with custom payload. The token will pass the validation on the client side. We recommend upgrading to version 1.33.3 or above

Metrics

CVSS 3.1

7.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

EPSS Probability

0.27%

18.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Oauth Client Library For Java	< 1.33.3

References

https://github.com/googleapis/google-oauth-java-client/pull/872Issue Tracking, Patch, Release Notes, Third Party Advisory
https://github.com/googleapis/google-oauth-java-client/pull/872Issue Tracking, Patch, Release Notes, Third Party Advisory

Timeline

Published: May 3, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22573?

How severe is CVE-2021-22573?

CVE-2021-22573 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22573?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22573?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST