CVE-2021-47721 HIGH

CVE-2021-47721: Orangescrum 1.8.0 Authenticated Privilege Escalation via User Session Manipulation

Vendor Orangescrum
Product orangescrum
Weakness CWE-639 · IDOR
Published December 23, 2025
Last update March 5, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Orangescrum 1.8.0 contains a privilege escalation vulnerability that allows authenticated users to take over other project-assigned accounts by manipulating session cookies. Attackers can extract the victim's unique ID from the page source and replace their own session cookie to gain unauthorized access to another user's account.

Key dates

02Disclosure timeline

December 23, 2025 CVE published
March 5, 2026 Record updated