# CVE-2021-22573: google-oauth-client-java: The vulnerability is that IDToken verifier does not verify if token is properly signed

CVE-2021-22573 is fixed in google-oauth-client-java on 1 platform, first by DEBIAN-CVE-2021-22573, released May 3, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-22573
- Priority: High
- CVSS: 7.3 (high)
- EPSS: 0.0030
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 3, 2022

## 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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | google-oauth-client-java Debian 12.15 (bookworm) | 1.33.3-1 | [DEBIAN-CVE-2021-22573](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22573.md) | May 3, 2022 |
| Linux | google-oauth-client-java Debian 13.5 (trixie) | 1.33.3-1 | [DEBIAN-CVE-2021-22573](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22573.md) | May 3, 2022 |
| Linux | google-oauth-client-java Debian 14 | 1.33.3-1 | [DEBIAN-CVE-2021-22573](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22573.md) | May 3, 2022 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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