Description
The TheGem theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ajaxApi() function in all versions up to, and including, 5.10.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary theme options.
Published: 2025-05-13
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized modification of theme settings
Action: Update Theme
AI Analysis

Impact

TheGem theme for WordPress contains a missing capability check in its ajaxApi function, which allows authenticated users with Subscriber level or higher to update arbitrary theme options. This flaw, classified as a Missing Authorization weakness, can alter site appearance or redirect users without the site owner's consent, compromising the integrity of the theme configuration.

Affected Systems

The vulnerability affects all CodexThemes:TheGem WordPress theme releases up to and including version 5.10.3. Any site utilizing these theme versions is susceptible; newer releases are not affected as they contain the missing authorization check fix.

Risk and Exploitability

The CVSS score of 4.3 indicates moderate severity, while the EPSS score of less than 1% suggests a very low probability of exploitation. Because the flaw requires a valid authenticated account at the Subscriber level or higher and operates via an AJAX endpoint, the attack vector is restricted to inbound authenticated web requests. The vulnerability is not listed in the CISA KEV catalog, further indicating it may not be a high‑profile threat at present.

Generated by OpenCVE AI on April 20, 2026 at 22:51 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update the TheGem theme to a patch‑level version 5.10.4 or newer to eliminate the missing capability check.
  • If an immediate upgrade is not feasible, modify role capabilities so that Subscriber-level accounts lack the "edit_theme_options" capability, thereby preventing access to the AJAX endpoint that updates theme options.
  • Continuously audit the theme options page for unauthorized modifications and implement monitoring or logging to detect any unexpected changes to the theme configuration.

Generated by OpenCVE AI on April 20, 2026 at 22:51 UTC.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-14369 The TheGem theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ajaxApi() function in all versions up to, and including, 5.10.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary theme options.
History

Tue, 13 May 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 13 May 2025 07:00:00 +0000

Type Values Removed Values Added
Description The TheGem theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ajaxApi() function in all versions up to, and including, 5.10.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary theme options.
Title TheGem <= 5.10.3 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Theme Options Update
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-08T17:32:36.442Z

Reserved: 2025-05-05T16:17:26.462Z

Link: CVE-2025-4339

cve-icon Vulnrichment

Updated: 2025-05-13T18:59:03.825Z

cve-icon NVD

Status : Deferred

Published: 2025-05-13T07:15:52.483

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-4339

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-20T23:00:14Z

Weaknesses