high · 7.1

A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes.

CVE-2026-1933 · GHSA-c866-5hw6-cqf9 · EUVD-2026-32275 · published 27 May 2026

How serious is it

  • Severity: high, CVSS score 7.1 out of 10.
  • No exploit prediction (EPSS) score yet.
  • Not on the CISA list of exploited vulnerabilities.
  • No public exploit in Exploit-DB.

Is your app affected by CVE-2026-1933?

Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.

Who is affected

  • Red Hat Red Hat OpenShift Container Platform 4.20: patch: 4.20.9.6.202608121719-0
  • Red Hat Red Hat Enterprise Linux 10: patch: 0:4.23.5-109.el10_2
  • Red Hat Red Hat OpenShift Container Platform 4.18: patch: 418.94.202608142238-0
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: patch: 0:4.15.5-16.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service: patch: 0:4.17.5-7.el8_8.1
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: patch: 0:4.17.5-7.el8_8.1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support: patch: 0:4.21.3-114.el10_0.1
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: patch: 0:4.15.5-16.el8_6.1
  • Red Hat Red Hat OpenShift Container Platform 4.15: patch: 415.92.202608180329-0
  • Red Hat Red Hat OpenShift Container Platform 4.19: patch: 4.19.9.6.202606241344-0

How to check

  1. Find out whether you run the affected product and which version, then compare it with the versions above.

How to fix

Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
  1. Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
  2. If a vulnerable version was live, check your logs and rotate the secrets that server could read.

The advisory

A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.

Check your whole app

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References

Merged from ENISA EUVD. Last updated 31 Oct 2026. All vulnerabilities · RSS · JSON

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