CVE-2025-62879
MEDIUMCVE-2025-62879 is a medium-severity (CVSS 6.8) CWE-532 vulnerability in github.com/rancher/backup-restore-operator. O3 Security confirms whether CVE-2025-62879 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Rancher Backup Operator pod's logs leak S3 tokens
Blast Radius
github.com/rancher/backup-restore-operator🐹github.com/rancher/backup-restore-operator🐹github.com/rancher/backup-restore-operator🐹github.com/rancher/backup-restore-operatorReal-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 vulnerability has been identified within the Rancher Backup Operator, resulting in the leakage of S3 tokens (both accessKey and secretKey) into the rancher-backup-operator pod's logs.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/rancher/backup-restore-operator | ≥ 9.0.0&&< 9.0.1 | 9.0.1 |
| 🐹Go | github.com/rancher/backup-restore-operator | ≥ 8.0.0&&< 8.1.2 | 8.1.2 |
| 🐹Go | github.com/rancher/backup-restore-operator | ≥ 7.0.0&&< 7.0.5 | 7.0.5 |
| 🐹Go | github.com/rancher/backup-restore-operator | ≥ 6.0.0&&< 6.0.3 | 6.0.3 |
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/backup-restore-operator. 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/backup-restore-operator to 9.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-62879 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-2025-62879 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-2025-62879. 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-2025-62879 in your dependencies?
O3 detects CVE-2025-62879 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.