CVE-2021-24503

Popular Brand SVG Icons - Simple Icons < 2.7.8 - Contributor+ Stored XSS

MEDIUM
5.4
CVSS Score
Published: August 2, 2021 at 10:32 AM UTC
Updated: June 17, 2026 at 03:40 AM UTC
1 product affected across 1 vendorPopular Brand Icons Simple Icons

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.6%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.7.8
Affected range stops below 2.7.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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