WordPress Nelio AB Testing plugin <= 8.2.7 - Remote Code Execution (RCE) vulnerability

published 2026-03-25 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-15931

cvss: 9.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

Improper Control of Generation of Code ('Code Injection') vulnerability in Nelio Software Nelio AB Testing nelio-ab-testing allows Code Injection.This issue affects Nelio AB Testing: from n/a through <= 8.2.7.

Patch / fix

fixed in 1

Nelio Software Nelio AB Testing 8.2.8

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 7 mo ago (2026-03-25)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% 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
CISA ADP	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

Nelio Software Nelio AB Testing

Classification

Weakness

CWE-94 Improper Control of Generation of Code

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/nelio-ab-testing/vulnerability/wordpress-nelio-ab-testing-plugin-8-2-7-remote-code-
vdb-entry

Sources

CVE List CVE-2026-32573
NVD CVE-2026-32573

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