CVE-2026-40783: WordPress Blocksy Companion Pro plugin <= 2.1.37 - Remote Code Execution (RCE) vulnerability
Deferred
Published 17-06-2026Last modified 17-06-2026
Vulnerability summary
CVE-2026-40783 is a critical (CVSS 9.9) Code Injection vulnerability in creative themes blocksy companion pro. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 55.7% of scored vulnerabilities. Fixed in 2.1.38.
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)EPSS score
0.79%
0%100%
Low · +0.25 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 17-06-2026PublishedVulnerability first disclosed.
- 17-06-2026Last modifiedVulnerability information updated.
Description
Contributor Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.37 versions.
CVSS metrics
3 scores · 3 sources · 1 versionCritical 9.9Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HSources3 sources · 4.3–9.9
- NVDNIST9.9CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- wordfenceSource4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.79%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
Increase +0.25 pp
From 0.54% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Creative themes1 product
- blocksy companion pro≥ n/a, ≤ 2.1.37
Wordpress1 product
- blocksy-companion-pro≤ 2.1.37 (fixed in 2.1.38)
2 vendors · 2 products
References
2 links- patchstack.com/database/…VDB Entry