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Fencer Intel
medium 6.1

CVE-2021-24891 json

Elementor < 3.4.8 - DOM Cross-Site-Scripting

published 4y ago modified 4mo ago also EUVD-2021-11803

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
28.9%
EPSS 28.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

The Elementor Website Builder WordPress plugin before 3.4.8 does not sanitise or escape user input appended to the DOM via a malicious hash, resulting in a DOM Cross-Site Scripting issue.

Patch / fix

  • elementor website_builder 3.1.4, 3.4.8

Is CVE-2021-24891 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

28.86% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template WordPress Elementor Website Builder <3.1.4 - Cross-Site Scripting nuclei detection template
  • jbelamor.com https://www.jbelamor.com/xss-elementor-lightox.html referenced PoC, tagged "exploit" by a source, unverified
  • wpscan.com https://wpscan.com/vulnerability/fbed0daa-007d-4f91-8d87-4bca7781de2d referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Unknown Elementor Website Builder

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel 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.