WordPress Slimstat Analytics plugin < 5.4.0 - Deserialization of untrusted data vulnerability

published 2026-06-17 4 mo ago modified 2026-10-26 14 d ago also EUVD-2026-37670

cvss: 6.5; 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 19%
public exploits: 0; none known

Unauthenticated Deserialization of untrusted data in Slimstat Analytics < 5.4.0 versions.

Patch / fix

fixed in 1

VeronaLabs Slimstat Analytics 5.4.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 4 mo ago (2026-06-17)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Affected products

VeronaLabs Slimstat Analytics

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/wp-slimstat/vulnerability/wordpress-slimstat-analytics-plugin-5-4-0-deserialization
vdb-entry

Sources

CVE List CVE-2026-27410
NVD CVE-2026-27410

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