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CVE-2026-40544— Stored XSS in SOPlanning

Quick assessment

Affected
SOPlanning SOPlanning
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.

SOPlanning是SOPlanning公司的一套在线项目管理软件。 SOPlanning 1.55及之前版本存在跨站脚本漏洞，该漏洞源于通过/process/upload_backup端点容易受到存储型跨站脚本攻击，可能导致经过身份验证的攻击者上传包含恶意user.csv文件的ZIP存档，当用户点击恶意备份的编辑按钮时，注入的代码会在受害者浏览器中执行。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.40% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
SOPlanning SOPlanning ≤ 1.55 affected
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I. Basic Information for CVE-2026-40544

Vulnerability Information
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Vulnerability Title
Stored XSS in SOPlanning
Source: CVE Program / CVE List V5
Vulnerability Description
SOPlanning is vulnerable to Stored Cross-Site Scripting (XSS) via /process/upload_backup endpoint. An authenticated attacker with access to the backup functionality can upload a crafted ZIP archive containing a malicious user.csv file with embedded JavaScript. The injected code is executed in the victim’s browser when a user clicks the Edit button for the malicious backup. This issue affects SOPlanning version 1.55 and below.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA: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
SOPlanning 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SOPlanning是SOPlanning公司的一套在线项目管理软件。 SOPlanning 1.55及之前版本存在跨站脚本漏洞，该漏洞源于通过/process/upload_backup端点容易受到存储型跨站脚本攻击，可能导致经过身份验证的攻击者上传包含恶意user.csv文件的ZIP存档，当用户点击恶意备份的编辑按钮时，注入的代码会在受害者浏览器中执行。
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
SOPlanning SOPlanning 0 ~ 1.55 -

II. Public POCs for CVE-2026-40544

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III. Intelligence Information for CVE-2026-40544

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Security Blog Posts for CVE-2026-40544 (1)

Same Patch Batch · SOPlanning · 2026-06-01 · 7 CVEs total

CVE-2026-40545 Reflected XSS in SOPlanning
CVE-2026-40546 Multiple SQL Injections in SOPlanning
CVE-2026-40543 Missing Authorization in SOPlanning
CVE-2026-40548 Unrestricted Upload of File with Dangerous Type in SOPlanning
CVE-2026-40549 Cross-Site Request Forgery in SOPlanning
CVE-2026-40547 Path Traversal in SOPlanning

IV. Related Vulnerabilities

Same product: SOPlanning
Same vendor: SOPlanning
Same weakness: CWE-79

V. Comments for CVE-2026-40544

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