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Authorization Bypass (IDOR)Weakness · CWE-639

CVE-2026-54839

HIGH · 7.5 CVSS v3.1 Published 2026-06-26
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click 8 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Unauthenticated Sensitive Data Exposure in Trinity Backup &#8211; Backup, Migrate, Restore, Clone &amp; Schedule Backups <= 2.0.9 versions.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Unauthenticated Sensitive Data Exposure vulnerability in Trinity Backup WordPress plugin versions 2.0.9 and below. Attackers can access sensitive backup data, configuration files, or database exports without any authentication, potentially exposing credentials, user data, and system configuration.

MitigationUpdate to the latest version of Trinity Backup plugin immediately. If no patched version is available, disable the plugin and remove it from the WordPress installation. Audit exposed data and rotate any credentials that may have been disclosed.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Verify Trinity Backup plugin is installed
    In WordPress admin panel, go to Plugins > Installed Plugins and look for 'Trinity Backup'. Alternatively, check the plugin directory at wp-content/plugins/ for a folder named 'trinity-backup' or similar.
    Affected if The plugin is present in the WordPress installation
  2. Determine installed plugin version
    In WordPress admin, click on the Trinity Backup plugin to view its details, which typically displays the version number. Alternatively, check the main plugin PHP file for the 'Version' header in the plugin comments.
    Affected if The displayed version is 2.0.9 or lower
  3. Test for unauthenticated backup file access
    Attempt to access common backup-related URL paths on the site, such as /wp-content/uploads/, /wp-content/backups/, or any path containing keywords like 'backup', 'dump', 'sql', or 'trinity' without logging in.
    Affected if HTTP requests return backup files, database dumps, or configuration files without requiring authentication
  4. Check for exposed backup directories
    Use a web browser or curl to probe the server for publicly accessible backup directories. Common paths include /wp-content/backup/, /wp-content/uploads/backups/, or directories matching the plugin's expected storage location.
    Affected if Directory listing or direct file access returns sensitive backup archives without authentication

A WordPress site is affected if it has Trinity Backup plugin version 2.0.9 or lower installed and its backup files or directories are accessible over the web without authentication.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update to the latest version of Trinity Backup plugin immediately. If no patched version is available, disable the plugin and remove it from the WordPress installation. Audit exposed data and rotate any credentials that may have been disclosed.

Recommended fix Moderate confidence

Trinity Backup plugin version > 2.0.9 (check WordPress plugin repository for latest version)

  1. Check the official WordPress plugin repository or the vendor's website for the latest version of Trinity Backup
  2. Review the plugin's changelog to confirm the version that includes the security fix for the IDOR vulnerability
  3. Update the Trinity Backup plugin to the latest available version (beyond 2.0.9)
  4. Verify the update was applied successfully
  5. Test that the backup functionality works correctly after the update
  6. Ensure the site functions normally post-update

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-54839 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data