CVE-2021-22573
CVE-2021-22573 is a high-severity vulnerability in Google Oauth Client Library For Java with a CVSS 3.x base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.
Key facts
- Severity: High (CVSS 3.x base score 8.7)
- CVSS v2: 3.5
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-347
- Affected product: Google Oauth Client Library For Java
- Published:
- Last modified:
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
Frequently asked questions
- What is CVE-2021-22573?
- 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
- How severe is CVE-2021-22573?
- CVE-2021-22573 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2021-22573 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-22573?
- CVE-2021-22573 affects Google Oauth Client Library For Java. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-22573?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-22573 published?
- CVE-2021-22573 was published on 2022-05-03 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:google:oauth_client_library_for_java:*:*:*:*:*:*:*:*
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