CVE-2020-7692 is a critical-severity (CVSS 9.1) CWE-863 vulnerability in com.google.oauth-client:google-oauth-client. 2 public exploit references exist, so weaponization risk is real. A fix is available for com.google.oauth-client:google-oauth-client — see the affected versions and patch details below.
Improper Authorization in Google OAuth Client
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2020-7692 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
com.google.oauth-client:google-oauth-clientReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.google.oauth-client:google-oauth-client | all versions | 1.31.0com.google.oauth-client:google-oauth-client:1.31.0 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.google.oauth-client:google-oauth-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.google.oauth-client:google-oauth-client to 1.31.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-7692 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2020-7692 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2020-7692. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
| Product | Fixed in | Advisory |
|---|---|---|
| OCP-Tools-4.12-RHEL-8 | jenkins-2-plugins-0:4.12.1698294000-1.el8 | RHSA-2023:6172 |
| OCP-Tools-4.12-RHEL-8 | jenkins-2-plugins-0:4.12.1706515741-1.el8 | RHSA-2024:0778 |
| OCP-Tools-4.13-RHEL-8 | jenkins-2-plugins-0:4.13.1684911916-1.el8 | RHSA-2023:3299 |
| Red Hat OpenShift Container Platform 4.10 | jenkins-2-plugins-0:4.10.1675144701-1.el8 | RHSA-2023:0560 |
| Red Hat OpenShift Container Platform 4.9 | jenkins-2-plugins-0:4.9.1675668922-1.el8 | RHSA-2023:0777 |
Frequently Asked Questions
Is CVE-2020-7692 in your dependencies?
O3 Security finds CVE-2020-7692 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.