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CVE-2026-18050 – Unauthenticated Information Disclosure – Events Manager WordPress Plugin before 7.4

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Summary

CVE-2026-18050 is an unauthenticated information disclosure vulnerability (CWE-200) in the Events Manager WordPress plugin before version 7.4. A REST endpoint that serves temporarily stored file uploads lacks an authorization check, allowing an unauthenticated actor who knows a temporary upload identifier to read another user’s in-progress upload. It carries a CVSS v3.1 base score of 7.5 (High).

Technical details

  • Root cause: The REST route handling temporary file uploads (events-manager/v1/uploads) does not perform an authorization check before returning the requested file.
  • Trigger conditions: An unauthenticated request referencing a valid temporary upload identifier. Per the advisory, identifiers are high-entropy values disclosed only to the uploader, and files are removed after submission or by scheduled cleanup, which limits practical exploitation.
  • Attack vector: Network; no privileges and no user interaction required.
  • Impact: Disclosure of another user’s in-progress upload contents (confidentiality). No impact to integrity or availability.

Affected software

  • Events Manager WordPress plugin: all versions before 7.4.

Severity

  • CVSS v3.1 base score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Update the Events Manager plugin to version 7.4 or later.
  • If no patch can be applied: Restrict or block unauthenticated access to the plugin’s REST endpoints (for example the events-manager/v1/uploads route) at the web server or WAF layer until the update can be deployed.

References

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