WordPress Groundhogg plugin <= 4.2.1 - Arbitrary File Upload vulnerability

published 2025-07-16 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-21623

cvss: 9.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits: 0; none known

Unrestricted Upload of File with Dangerous Type vulnerability in Adrian Tobey Groundhogg groundhogg allows Upload a Web Shell to a Web Server.This issue affects Groundhogg: from n/a through <= 4.2.1.

Patch / fix

fixed in 1

Adrian Tobey Groundhogg 4.2.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 15 mo ago (2025-07-16)

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

Adrian Tobey Groundhogg

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/groundhogg/vulnerability/wordpress-groundhogg-4-2-1-arbitrary-file-upload-vulnerabi
vdb-entry

Sources

CVE List CVE-2025-48300
NVD CVE-2025-48300

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary