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Fencer Vulns
critical 9.8

CVE-2019-25138 json

User Submitted Posts <= 20190312 - Unauthenticated Arbitrary File Upload

published 2023-06-07 3 y ago modified 2026-06-17 4 mo ago also EUVD-2019-11572

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

The User Submitted Posts plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the usp_check_images function in versions up to, and including, 20190312. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

Patch / fix

  • specialk User Submitted Posts – Enable Users to Submit Posts from the Front End 20190426

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
22 mo ago

Exploit prediction

2.33% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.nintechnet.com https://blog.nintechnet.com/arbitrary-file-upload-vulnerability-in-wordpress-user-submitted-posts-plugin/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • specialk User Submitted Posts – Enable Users to Submit Posts from the Front End

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.