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Vulnerabilities

Vulnerability · CVE-2025-13543

The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up t

Published Dec 4, 2025 · catalog updated Oct 18, 2026 · PostGallery

Last checked Oct 27, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-13543. EPSS is 0.76%. Act only if a listed version of PostGallery is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.76%
Remediation
Version ranges on file
Affected products
stated named in the record · vendor rtowebsites PostGallery 0 ≤1.12.5

The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up to, and including, 1.12.5. This makes it possible for authenticated attackers, with subscriber-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated named in the record<= 1.12.5
  • vendor rtowebsites PostGallery 0 ≤1.12.50 ≤1.12.5

How to fix CVE-2025-13543

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-13543. EPSS is 0.76%. Act only if a listed version of PostGallery is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 1.12.5; rtowebsites PostGallery 0 ≤1.12.5 0 ≤1.12.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-434: Unrestricted Upload of File with Dangerous Type. EPSS 0.76%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

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

Timeline

Detection, updates, and resolution for this record.

  1. Dec 4, 2025 · NIST NVD

    Detected

    The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up to, and including, 1.12.5. This makes it possible for authenticated attackers, with subscriber-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution poss

  2. Oct 18, 2026 · NIST NVD

    Updated

    The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up to, and including, 1.12.5. This makes it possible for authenticated attackers, with subscriber-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution poss

Sources

  • CVE.orgVulnerability recordCVE-2025-13543

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-13543

    30-day exploitation probability 0.76%

    first.org
  • EUVDVulnerability recordEUVD-2025-201275

    The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up to, and including, 1.12.5. This makes it possible for authenticated attackers, with subscriber-level

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2025-13543

    The PostGallery plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'PostGalleryUploader' class functions in all versions up to, and including, 1.12.5. This makes it possible for authenticated attackers, with subscriber-level

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDOct 26, 2026
  • FIRST EPSSOct 24, 2026
  • NIST NVDOct 18, 2026
  • CVE.orgOct 18, 2026