CVE-2026-40544 MEDIUM

CVE-2026-40544: Stored XSS in SOPlanning

Vendor Soplanning

Product SOPlanning

Weakness CWE-79 · XSS

Published June 1, 2026

Last update June 1, 2026

View on NVD All CVEs

CVSS base score

5.1/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction —

Confidentiality —

Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 1, 2026 CVE published

June 1, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-40544 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html

Related vulnerabilities

04Related CVE

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