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CVE-2021-20840

Quick assessment

Affected
Saasproject Booking Package - Appointment Booking Calendar System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Appointment Booking Calendar System是Saasproject团队的一个 WordPress 的约会预订日历系统插件。 WordPress 插件 Appointment Booking Calendar System 1.5.11之前版本存在跨站脚本漏洞，该漏洞源于插件对用户提供的数据没有进行充分的清理。远程攻击者可利用该漏洞诱骗受害者遵循一个特别制作的链接，并在用户的浏览器中执行任意的HTML和脚本代码，在易受攻击的网站。公开的漏洞允许远程攻击者可利用该漏洞执行跨站脚本攻

AI Predicted 5.4 Difficulty: Easy EPSS 1.28% · P70
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I. Basic Information for CVE-2021-20840

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site scripting vulnerability in Booking Package - Appointment Booking Calendar System versions prior to 1.5.11 allows a remote attacker to inject an arbitrary script via unspecified vectors.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Appointment Booking Calendar System 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Appointment Booking Calendar System是Saasproject团队的一个 WordPress 的约会预订日历系统插件。 WordPress 插件 Appointment Booking Calendar System 1.5.11之前版本存在跨站脚本漏洞，该漏洞源于插件对用户提供的数据没有进行充分的清理。远程攻击者可利用该漏洞诱骗受害者遵循一个特别制作的链接，并在用户的浏览器中执行任意的HTML和脚本代码，在易受攻击的网站。公开的漏洞允许远程攻击者可利用该漏洞执行跨站脚本攻
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Saasproject Booking Package - Appointment Booking Calendar System versions prior to 1.5.11 -

II. Public POCs for CVE-2021-20840

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III. Intelligence Information for CVE-2021-20840

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Vendor Advisories for CVE-2021-20840 (1)

Other References for CVE-2021-20840 (2)

IV. Related Vulnerabilities

Same vendor: Saasproject

V. Comments for CVE-2021-20840

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