TI-2025-12373 Aliases CVE-2025-13543 GHSA-c87j-2j6h-48gh

PostGallery <= 1.12.5 - Authenticated (Subscriber+) Arbitrary File Upload

MEDIUM 42CWE-434Published 2025-12-04 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00809 57th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
rtowebsites	PostGallery	up to 1.12.5	—	No fix listed	CNA

PostGallery Vendorrtowebsites Affected up to 1.12.5 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-13543
2026-10-03 Alias added: GHSA-c87j-2j6h-48gh

References

Other 2

TI-2025-16252 WordPress DynamicTags plugin <= 1.4.0 - SQL Injection vulnerability CVSS 3.1HIGH 8.5
TI-2025-26206 WordPress AdminQuickbar plugin <= 1.9.1 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
TI-2025-16525 WordPress Dynamic Conditions plugin <= 1.7.4 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
TI-2025-13368 AdminQuickbar <= 1.9.3 - Cross-Site Request Forgery to Settings Update CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences