XSS in Bigprof Online Invoicing System
CVE-2021-21260
Online Invoicing System (OIS) is open source software which is a lean invoicing system for small businesses, consultants and freelancers created using AppGini. In OIS version 4.0 there is a stored XSS which can enables an attacker takeover of the admin account through a payload that extracts a csrf token and sends a request to change password. It has been found that Item description is reflected without sanitization in app/items_view.php which enables the malicious scenario.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Bigprof Online Invoicing System — versions 4.0
- Bigprof-Software Online-Invoicing-System — versions = 4.0
Weakness classification (CWE)
References
- github.com/bigprof-software/online-invoicing-system/security/advisories/GHSA-rm… (Exploit, Third Party Advisory)
- github.com/bigprof-software/online-invoicing-system/releases/tag/4.2 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21260?
- CVE-2021-21260 is a high-severity vulnerability in Bigprof Online Invoicing System, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2021-01-22.
- How severe is CVE-2021-21260?
- High severity. CVSS v3 base score is 7.6 out of 10.