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CVE-2021-4431— msyk FMDataAPI FMDataAPI_Sample.php cross site scripting

Quick assessment

Affected
msyk FMDataAPI
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.

FMDataAPI是Masayuki Nii个人开发者的一个类。用于使用 FileMaker Data API 访问 FileMaker 数据库。 FMDataAPI 22及之前版本存在跨站脚本漏洞，该漏洞源于文件FMDataAPI_Sample.php存在问题，会导致跨站脚本。

CVSS 3.5 · Low EPSS 0.63% · P48

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-4431

Vulnerability Information
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Vulnerability Title
msyk FMDataAPI FMDataAPI_Sample.php cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability classified as problematic has been found in msyk FMDataAPI up to 22. Affected is an unknown function of the file FMDataAPI_Sample.php. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 23 is able to address this issue. The patch is identified as 3bd1709a8f7b1720529bf5dfc9855ad609f436cf. It is recommended to upgrade the affected component. VDB-244494 is the identifier assigned to this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
FMDataAPI 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FMDataAPI是Masayuki Nii个人开发者的一个类。用于使用 FileMaker Data API 访问 FileMaker 数据库。 FMDataAPI 22及之前版本存在跨站脚本漏洞，该漏洞源于文件FMDataAPI_Sample.php存在问题，会导致跨站脚本。
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
msyk FMDataAPI 22 -

II. Public POCs for CVE-2021-4431

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III. Intelligence Information for CVE-2021-4431

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Patches & Fixes for CVE-2021-4431 (2)

Vendor Advisories for CVE-2021-4431 (2)

Other References for CVE-2021-4431 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2021-4431

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