PT-2026-45357 · Unknown · Soplanning

Łukasz Jaworski · CVE-2026-40544 · Published 2026-06-01 · Updated 2026-06-01

Positive Technologies (AI Summary)

CVSS v4.0

5.1

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

Name of the Vulnerable Software and Affected Versions SOPlanning versions prior to 1.56

Description Stored Cross-Site Scripting (XSS) occurs via the '/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 executes in the victim's browser when the Edit button for the malicious backup is clicked.

Recommendations Update to a version later than 1.55. Restrict access to the '/process/upload backup' endpoint to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-40544

Affected Products

Soplanning

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-40544 · Security Note
• https://soplanning.org/en · Note
• https://t.me/cveNotify/165484 · Telegram Post
• https://cert.pl/en/posts/2026/06/CVE-2026-40543 · Note