CVE-2021-24821: Cost Calculator < 1.6 - Contributor+ Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-03-07 · updated 2026-06-17
Weakness: CWE-79

Description

The Cost Calculator WordPress plugin before 1.6 allows users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks via the Description fields of a Cost Calculator > Price Settings (which gets injected on the edit page as well as any page that embeds the calculator using the shortcode), as well as the Text Preview field of a Project (injected on the edit project page)

Affected products

Cost Calculator: before 1.6 — fixed in 1.6

How to fix

Upgrade to a fixed version: Cost Calculator 1.6. Check the vendor advisory for mitigations.

References

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