CVE-2025-23391
CRITICALCVE-2025-23391 is a critical-severity (CVSS 9.1) CWE-266 vulnerability in github.com/rancher/rancher. O3 Security confirms whether CVE-2025-23391 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Rancher: Restricted Administrator can change Administrator's passwords
Blast Radius
github.com/rancher/rancher🐹github.com/rancher/rancher🐹github.com/rancher/rancherReal-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
A Incorrect Privilege Assignment vulnerability in SUSE rancher allows a Restricted Administrator to change the password of Administrators and take over their accounts. This issue affects rancher: from 2.8.0 before 2.8.14, from 2.9.0 before 2.9.8, from 2.10.0 before 2.10.4.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/rancher/rancher | ≥ 2.8.0&&< 2.8.14 | 2.8.14 |
| 🐹Go | github.com/rancher/rancher | ≥ 2.9.0&&< 2.9.8 | 2.9.8 |
| 🐹Go | github.com/rancher/rancher | ≥ 2.10.0&&< 2.10.4 | 2.10.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/rancher/rancher. 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/rancher/rancher to 2.8.14 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-23391 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-2025-23391 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-2025-23391. 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-2025-23391 in your dependencies?
O3 detects CVE-2025-23391 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.