CVE-2021-32859: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

February 21, 2023 (updated February 22, 2023)

The Baremetrics date range picker is a solution for selecting both date ranges and single dates from a single calender view. Versions 1.0.14 and prior are prone to cross-site scripting (XSS) when handling untrusted placeholder entries. An attacker who is able to influence the field placeholder when creating a Calendar instance is able to supply arbitrary html or javascript that will be rendered in the context of a user leading to XSS. There are no known patches for this issue.

References

github.com/Baremetrics/calendar/blob/240c20134ffbf0f0f246a50feff2be1ff19cf349/public/js/Calendar.js
github.com/advisories/GHSA-465f-mxxh-grc4
nvd.nist.gov/vuln/detail/CVE-2021-32859
securitylab.github.com/advisories/GHSL-2021-1042_Baremetrics_Date_Range_Picker/

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