CVE-2020-35676

Name: CVE-2020-35676
Creator: NVD / NIST
Published: 2020-12-24T04:15:12.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2020-35676 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.75%

50.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Bigprof	Online Invoicing System	< 3.1

References

https://github.com/bigprof-software/online-invoicing-system/releases/tag/3.1Third Party Advisory
https://labs.ingredous.com/2020/07/13/ois-membershipsignup-xss/Exploit, Third Party Advisory
https://github.com/bigprof-software/online-invoicing-system/releases/tag/3.1Third Party Advisory
https://labs.ingredous.com/2020/07/13/ois-membershipsignup-xss/Exploit, Third Party Advisory

Timeline

Published: Dec 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35676?

How severe is CVE-2020-35676?

CVE-2020-35676 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35676?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35676?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST