Auth bypass in Orangescrum
CVE-2021-47721
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.004 (35.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Orangescrum — versions 1.8.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47721?
- CVE-2021-47721 is a high-severity vulnerability in Orangescrum, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2025-12-23.
- How severe is CVE-2021-47721?
- High severity. CVSS v3 base score is 8.8 out of 10.