The Imagely NextGen Gallery plugin for Wordpress prior to version 2.1.57 may execute code from an uploaded malicious file

published 2018-07-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7486

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.5%; EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits: 0; none known

The Imagely NextGen Gallery plugin for Wordpress prior to version 2.1.57 does not properly validate user input in the cssfile parameter of a HTTP POST request, which may allow an authenticated user to read arbitrary files from the server, or execute arbitrary code on the server in some circumstances (dependent on server configuration).

Patch / fix

fixed in 1

imagely nextgen_gallery 2.1.57

Exploit prediction

2.51% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.0	AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected products

Imagely NextGen Gallery plugin

Classification

Weakness

CWE-98 Improper Control of Filename for Include/Require Statement in PHP Program
CWE-20 Improper Input Validation

Technology feeds

WordPress rss critical rss

References

securityfocus.com /bid/94356/
vdb-entry, third-party-advisory
kb.cert.org /vuls/id/346175
third-party-advisory, us-government-resource

Sources

CVE List CVE-2016-6565
NVD CVE-2016-6565

Fencer Intel 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.

Summary