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Fencer Vulns
critical 9.8

CVE-2021-24284 in the critical feed json

Kaswara Modern VC Addons <= 3.0.1 - Unauthenticated Arbitrary File Upload

published 2021-05-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11198

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
42.1%
EPSS 42.1% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

The Kaswara Modern VC Addons WordPress plugin through 3.0.1 allows unauthenticated arbitrary file upload via the 'uploadFontIcon' AJAX action. The supplied zipfile being unzipped in the wp-content/uploads/kaswara/fonts_icon directory with no checks for malicious files such as PHP.

Exploit prediction

42.14% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template WordPress Kaswara Modern VC Addons <=3.0.1 - Arbitrary File Upload nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/8d66e338-a88f-4610-8d12-43e8be2da8c5 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/167743/WordPress-Kaswara-Modern-WPBakery-Page-Builder-3.0.1-File-Upload.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • SayenThemes Kaswara Modern VC Addons

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type
Technology feeds

References

Sources

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.