CVE-2025-55191 is a medium-severity (CVSS 6.5) CWE-362 vulnerability in github.com/argoproj/argo-cd/v2. O3 Security confirms whether CVE-2025-55191 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Repository Credentials Race Condition Crashes Argo CD Server
Real-World Exposure
github.com/argoproj/argo-cd/v2🐹github.com/argoproj/argo-cd/v3🐹github.com/argoproj/argo-cd/v3🐹github.com/argoproj/argo-cd/v3Real-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
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Versions between 2.1.0 and 2.14.19, 3.2.0-rc1, 3.1.0-rc1 through 3.1.7, and 3.0.0-rc1 through 3.0.18 contain a race condition in the repository credentials handler that can cause the Argo CD server to panic and crash when concurrent operations are performed on the same repository URL. The vulnerability is located in numerous repository related handlers in the util/db/repository_secrets.go file. A valid API token with repositories resource permissions (create, update, or delete actions) is required to trigger the race condition. This vulnerability causes the entire Argo CD server to crash and become unavailable. Attackers can repeatedly and continuously trigger the race condition to maintain a denial-of-service state, disrupting all GitOps operations. This issue is fixed in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/argoproj/argo-cd/v2 | ≥ 2.1.0&&< 2.14.20 | 2.14.20 |
| 🐹Go | github.com/argoproj/argo-cd/v3 | ≥ 3.2.0-rc1&&< 3.2.0-rc2 | 3.2.0-rc2 |
| 🐹Go | github.com/argoproj/argo-cd/v3 | ≥ 3.1.0-rc1&&< 3.1.8 | 3.1.8 |
| 🐹Go | github.com/argoproj/argo-cd/v3 | ≥ 3.0.0-rc1&&< 3.0.19 | 3.0.19 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/argoproj/argo-cd/v2. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update github.com/argoproj/argo-cd/v2 to 2.14.20 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-55191 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 pinpoints whether CVE-2025-55191 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2025-55191. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2025-55191 in your dependencies?
O3 detects CVE-2025-55191 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.