high · 7.1

A flaw was found in xdgmime.

CVE-2026-16118 · GHSA-cp7g-r78m-cc2g · EUVD-2026-45266 · published 17 Jul 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-2026-16118?

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Who is affected

  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support: patch: 0:2.80.4-4.el10_0.18
  • Red Hat Red Hat Update Infrastructure 5: patch: 1789482961
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: patch: 0:2.68.4-14.el9_4.9
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.18: patch: 1789029076
  • Red Hat Red Hat OpenShift AI 3.5: patch: 1790703552
  • Red Hat Red Hat Enterprise Linux AI 3.5: patch: 1793194834
  • Red Hat Red Hat OpenShift AI 3.0: patch: 1790276884
  • Red Hat Red Hat OpenShift AI 3.3: patch: 1790703615
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.20: patch: 1790223719
  • Red Hat Red Hat Enterprise Linux AI 3.5: patch: 1793194817

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 xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.

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References

Merged from ENISA EUVD. Last updated 30 Oct 2026. All vulnerabilities · RSS · JSON

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