CVE-2025-22868 — oauth2
HIGHCVE-2025-22868 is a high-severity (CVSS 7.5) CWE-1286 vulnerability in golang.org/x/oauth2. A fix is available for golang.org/x/oauth2 — see the affected versions and patch details below.
golang.org/x/oauth2 Improper Validation of Syntactic Correctness of Input vulnerability
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-22868.
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-2025-22868 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 378,567 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
golang.org/x/oauth2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
An attacker can pass a malicious malformed token which causes unexpected memory to be consumed during parsing.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | golang.org/x/oauth2 | all versions | 0.27.0go get golang.org/x/oauth2@v0.27.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for golang.org/x/oauth2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update golang.org/x/oauth2 to 0.27.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-22868 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-2025-22868 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-22868. 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 |
|---|---|---|
| Cryostat 4 on RHEL 9 | cryostat/cryostat-agent-init-rhel9:0.5.0-9 | RHSA-2025:3503 |
| gatekeeper 3.15 for RHEL 9 | gatekeeper/gatekeeper-operator-bundle:v3.15.4-1 | RHSA-2025:3053 |
| gatekeeper 3.17 for RHEL 9 | gatekeeper/gatekeeper-operator-bundle:v3.17.2-2 | RHSA-2025:3051 |
| multicluster engine for Kubernetes 2.4 for RHEL 8 | multicluster-engine/addon-manager-rhel8:v2.4.9-5 | RHSA-2025:8390 |
| multicluster engine for Kubernetes 2.5 for RHEL 8 | multicluster-engine/agent-service-rhel8:v2.5.9-8 | RHSA-2025:4473 |
| multicluster engine for Kubernetes 2.6 for RHEL 8 | multicluster-engine/assisted-image-service-rhel8:v2.6.7-11 | RHSA-2025:4605 |
| multicluster engine for Kubernetes 2.7 for RHEL 8 | multicluster-engine/assisted-service-8-rhel8:v2.7.4-18 | RHSA-2025:3987 |
| multicluster engine for Kubernetes 2.8 for RHEL 8 | multicluster-engine/assisted-service-8-rhel8:v2.8.1-4 | RHSA-2025:3720 |
Frequently Asked Questions
Is CVE-2025-22868 in your dependencies?
O3 Security finds CVE-2025-22868 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.