6.6

CVE-2026-16297: unknown clearfy cache Deserialization of Untrusted Data

CVSS: 6.6v3.1MediumDeferred
Published 03-08-2026Last modified 03-08-2026
Open JSON

Vulnerability summary

CVE-2026-16297 is a medium (CVSS 6.6) Deserialization of Untrusted Data vulnerability in unknown clearfy cache. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 2.4.3.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.6/10
010
Medium · v3.1 (wordfence)
EPSS score
0.37%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 03-08-2026
    PublishedVulnerability first disclosed.
  2. 03-08-2026
    Last modifiedVulnerability information updated.

Description

The Clearfy Cache WordPress plugin before 2.4.3 does not restrict the classes allowed when unserializing settings-import data, allowing users with administrator access to perform PHP Object Injection attacks, which may lead to remote code execution when a suitable gadget chain is present in the environment.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

+0.14 pp

From 0.22% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.37%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • clearfy≤ 2.4.2 (fixed in 2.4.3)

2 vendors · 2 products

References

2 links