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CVE-2021-24503

MEDIUM 5.4 CVSS 3.1
Published
August 2, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

The Popular Brand Icons – Simple Icons WordPress plugin before 2.7.8 does not sanitise or validate some of its shortcode parameters, such as "color", "size" or "class", allowing users with a role as low as Contributor to set Cross-Site payload in them. A post made by a contributor would still have to be approved by an admin to have the XSS triggered in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability.

Affected products and versions

  • Unknown Popular Brand Icons – Simple Icons — From 2.7.8 (including) to 2.7.8 (excluding)
  • thememason popular_brand_icons_-_simple_icons — Before 2.7.8

References

  • wpscan.com https://wpscan.com/vulnerability/18ab1570-2b4a-48a4-86e6-c1d368563691 Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record