dbcve.org
Missing AuthorizationWeakness · CWE-862

CVE-2023-51515

HIGH · 8.8 CVSS v3.1 Published 2024-04-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

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
Missing Authorization vulnerability in Undsgn Uncode Core allows Privilege Escalation.This issue affects Uncode Core: from n/a through 2.8.8.

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 · high confidence

Missing authorization check in Undsgn Uncode Core theme allows authenticated users to escalate privileges, likely by accessing admin-level functions or AJAX endpoints without proper capability verification. The vulnerability exists across versions up to 2.8.8.

MitigationUpdate Uncode Core to the latest version immediately. If update is not possible, disable the theme and use a secure alternative, or audit and add capability checks (current_user_can) and nonce verification to all admin/AJAX handlers.

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

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. Confirm Uncode Core theme is installed
    Check your WordPress theme directory (wp-content/themes/) for the presence of the Uncode or Uncode Core theme folder. In WordPress admin, go to Appearance > Themes to verify the theme is active.
    Affected if The Uncode or Uncode Core theme is installed and active on the WordPress site.
  2. Identify the installed version
    Open the style.css file within the Uncode theme folder and locate the 'Version:' header in the file comments. Alternatively, check the theme version displayed in WordPress admin under Appearance > Themes > Theme Details.
    Affected if The installed version is 2.8.8 or any earlier version, since the vulnerability affects versions up to 2.8.8.
  3. Verify AJAX functionality is exposed
    Check for AJAX action hooks in the theme by searching for 'add_action' calls with 'wp_ajax' or 'wp_ajax_nopriv' in theme PHP files, particularly in functions.php or any includes/ajax folder. Inspect the theme's includes/admin or includes/ajax directories if present.
    Affected if AJAX endpoints exist in the theme and are accessible to authenticated users without capability checks.
  4. Inspect admin functions for missing authorization
    Review theme PHP files for admin-related functions or AJAX handlers. Search for code that performs admin actions (user role changes, content modifications, settings updates) without calling 'current_user_can' or 'wp_verify_nonce' before executing sensitive operations.
    Affected if Admin-level functions or AJAX handlers exist that lack capability verification (current_user_can) or nonce validation.

A user is affected if the Uncode Core theme version is 2.8.8 or earlier AND the theme exposes admin functions or AJAX endpoints that lack proper capability checks, allowing any authenticated user to perform privileged actions.

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 Uncode Core to the latest version immediately. If update is not possible, disable the theme and use a secure alternative, or audit and add capability checks (current_user_can) and nonce verification to all admin/AJAX handlers.

Recommended fix Moderate confidence

Latest version after 2.8.8 (contact Undsgn support for exact fixed release)

  1. 1. Backup your WordPress site and database before making any changes
  2. 2. Check the current Uncode Core version in your WordPress installation (typically in theme functions or version file)
  3. 3. Navigate to Appearance > Themes in WordPress admin
  4. 4. Update Uncode Core theme to the latest available version
  5. 5. Verify the update was successful and the site functions correctly
  6. 6. Test that privilege escalation is no longer possible (e.g., lower-privileged users cannot access admin functions)
Caveat Review theme changelog for potential CSS/JS changes that may affect site appearance after upgrade

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

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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Scan for this in your stack

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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-2023-51515 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