9.8

CVE-2026-58480: creative themes blocksy companion

CVSS: 9.8v3.1CriticalDeferred
Published 08-07-2026Last modified 14-07-2026
Open JSON

Vulnerability summary

CVE-2026-58480 is a critical (CVSS 9.8) vulnerability in creative themes blocksy companion. EPSS estimates a 3.57% chance of exploitation in the next 30 days, higher than 89.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
3.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Timeline

  1. 08-07-2026
    PublishedVulnerability first disclosed.
  2. 14-07-2026
    Last modifiedVulnerability information updated.

Description

Blocksy Companion Pro plugin for WordPress before 2.1.47 contains an unauthenticated arbitrary file upload vulnerability that allows attackers to upload executable files by bypassing extension validation in the save_attachments function exposed through the Advanced Reviews feature. Attackers can exploit the Custom Fonts extension's flawed strpos() substring check by uploading double-extension filenames such as shell.woff2.php, causing the validation to pass on the substring match while the web server executes the file as PHP, achieving remote code execution.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

3.57%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

0.00 pp

From 3.57% on 21-09-2026

21-09-202621-10-2026
EPSS score
3.57%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • exploit-databasemultipleUnverified

    Blocksy Companion 2.1.46 - RCE

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Creative themes1 product

1 vendor · 1 product

References

4 links