CVE-2020-7692
An attacker is able to obtain the authorization code using a malicious app on the client-side and use it to gain authorization to the protected resource.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
PKCE support is not implemented in accordance with the RFC for OAuth 2.0 for Native Apps. Without the use of PKCE, the authorization code returned by an authorization server is not enough to guarantee that the client that issued the initial authorization request is the one that will be authorized. An attacker is able to obtain the authorization code using a malicious app on the client-side and use it to gain authorization to the protected resource. This affects the package com.google.oauth-client:google-oauth-client before 1.31.0.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 1.52% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- google/oauth client library for java
- Source
- report@snyk.io
EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/googleapis/google-oauth-java-client/commit/13433cd7dd06267fc261f0b1d4764f8e3432c824Patch, Third Party Advisory
- https://github.com/googleapis/google-oauth-java-client/issues/469Third Party Advisory
- https://lists.apache.org/thread.html/r3db6ac73e0558d64f0b664f2fa4ef0a865e57c5de20f8321d3b48678%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/reae8909b264d1103f321b9ce1623c10c1ddc77dba9790247f2c0c90f%40%3Ccommits.druid.apache.org%3E
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEOAUTHCLIENT-575276Third Party Advisory
- https://tools.ietf.org/html/rfc7636%23section-1Exploit, Third Party Advisory
- https://tools.ietf.org/html/rfc8252%23section-8.1Exploit, Third Party Advisory
- https://github.com/googleapis/google-oauth-java-client/commit/13433cd7dd06267fc261f0b1d4764f8e3432c824Patch, Third Party Advisory
- https://github.com/googleapis/google-oauth-java-client/issues/469Third Party Advisory
- https://lists.apache.org/thread.html/r3db6ac73e0558d64f0b664f2fa4ef0a865e57c5de20f8321d3b48678%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/reae8909b264d1103f321b9ce1623c10c1ddc77dba9790247f2c0c90f%40%3Ccommits.druid.apache.org%3E
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEOAUTHCLIENT-575276Third Party Advisory
- https://tools.ietf.org/html/rfc7636%23section-1Exploit, Third Party Advisory
- https://tools.ietf.org/html/rfc8252%23section-8.1Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.