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wpvulndbKrzysztof ZajΔ…cWPVDB-ID:15BE2D2B-BAA3-4845-82CF-3C351C695B47
HistoryJan 13, 2022 - 12:00 a.m.

SpiderCalendar <= 1.5.65 - Reflected Cross-Site Scripting

2022-01-1300:00:00
Krzysztof ZajΔ…c
wpscan.com
4
spidercalendar
plugin
version 1.5.65
reflected cross-site scripting
callback parameter
window ajax action
unauthenticated users
authenticated users
closure
maintenance
security issue

EPSS

0.001

Percentile

36.8%

The plugin does not sanitise and escape the callback parameter before outputting it back in the page via the window AJAX action (available to both unauthenticated and authenticated users), leading to a Reflected Cross-Site Scripting issue. Note: Vendor decided to close the plugin and it won’t be maintained anymore

PoC

https://example.com/wp-admin/admin-ajax.php?action=window&amp;callback;=</script><img/src/onerror=alert(/XSS/);>

EPSS

0.001

Percentile

36.8%

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