CVE-2020-6583 json
BigProf Online Invoicing System (OIS) through 2.6 has XSS that can be leveraged for session hijacking.
published 2020-01-08 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27731
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
BigProf Online Invoicing System (OIS) through 2.6 has XSS that can be leveraged for session hijacking. An attacker can exploit the XSS vulnerability, retrieve the session cookie from the administrator login, and take over the administrator account via the Name field in an Add New Client action.
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- sevenlayers.com https://www.sevenlayers.com/index.php/282-online-invoicing-system-2-6-xss-session-hijack referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
sevenlayers.com
/index.php/282-online-invoicing-system-2-6-xss-session-hijack
exploit, third-party-advisory
Sources
- CVE List CVE-2020-6583
- NVD CVE-2020-6583
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