CVE-2021-22573

Incorrect signature verification on Google-oauth-java-client

HIGH
7.3
CVSS Score
Published: May 3, 2022 at 03:45 PM UTC
Updated: June 17, 2026 at 03:37 AM UTC
1 product affected across 1 vendorOauth Client Library for Java

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Severity
HIGH7.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.33.2v < 1.33.3
Affected range stops below 1.33.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.33.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_MISCIssue TrackingPatchRelease NotesThird Party Advisory
https://github.com/googleapis/google-oauth-java-client/pull/872

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-347

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