CVE-2026-40544

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.

Related Weaknesses (CWE)

References

• https://cert.pl/en/posts/2026/06/CVE-2026-40543
• https://www.soplanning.org/en/

FAQ

What is CVE-2026-40544?

CVE-2026-40544 is a documented vulnerability. 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 co...

How severe is CVE-2026-40544?

CVSS scoring is not yet available for CVE-2026-40544. Check NVD for updates.

Is there a patch for CVE-2026-40544?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.