XSS in Bigprof Online Invoicing System
CVE-2020-35676
BigProf Online Invoicing System before 3.1 fails to correctly sanitize an XSS payload when a user registers using the self-registration functionality. As such, an attacker can input a crafted payload that will execute upon the application's administrator browsing the registered users' list. Once the arbitrary Javascript is executed in the context of the admin, this will cause the attacker to gain administrative privileges, effectively leading into an application takeover. This affects app/membership_signup.php and app/admin/pageViewMembers.php.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (53.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.000
Affected products
Weakness classification (CWE)
References
- labs.ingredous.com/2020/07/13/ois-membershipsignup-xss/ (Exploit, Third Party Advisory)
- github.com/bigprof-software/online-invoicing-system/releases/tag/3.1 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-35676?
- CVE-2020-35676 is a medium-severity vulnerability in Bigprof Online Invoicing System, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-12-24.
- How severe is CVE-2020-35676?
- Medium severity. CVSS v3 base score is 6.1 out of 10.