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Vulnerabilities

Vulnerability · CVE-2025-4339

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,

Published May 13, 2025 · catalog updated Apr 8, 2026 · CodexThemes TheGem

Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.4%
Remediation
Vendor / distro source
Affected products
vendor CodexThemes TheGem 0 ≤5.10.3

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.

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

  • CWE classification

    No CWE identifiers stored yet.

  • Prerequisites and impact

    Follow the original vendor advisory for access prerequisites and impact. This catalog does not invent exploit conditions.

How to fix CVE-2025-4339

What to do

Three reads of the same public record: the decision, the versions on file, and the signals. Confirm the vendor advisory before you patch. This page does not publish exploit steps.

Executive

This is a public record, not a confirmed incident. CVE-2025-4339 is a medium issue in CodexThemes TheGem (CVSS 4.3). CISA does not currently list it as known exploited. Next step: Compare installed versions with the linked vendor advisory before changing production.

System administrator

Check whether CodexThemes TheGem is installed. Ranges on record: CodexThemes TheGem 0 ≤5.10.3 (0 ≤5.10.3). Compare installed versions with the linked vendor advisory before changing production.

Security analyst

CVSS 4.3. EPSS 0.4%. CISA does not currently list it as known exploited. Weaknesses: not classified. Sources: cve_org, epss, euvd. Exploit links, when listed below, point at the original publisher.

Related intelligence

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 13, 2025 · EUVD

    Detected

    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.

  2. Apr 8, 2026 · EUVD

    Updated

    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.

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

  • vendor CodexThemes TheGem 0 ≤5.10.30 ≤5.10.3

Sources

  • CVE.orgVulnerability recordCVE-2025-4339

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4339

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-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,

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.