CVE-2020-6583
BigProf Online Invoicing System (OIS) through 2.6 has XSS that can be leveraged for session hijacking.
Does this matter?
Lower severity and a low EPSS score (0.69%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.69% probability · 52th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- bigprof/online invoicing system
- Source
- cve@mitre.org
EPSS 0.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.sevenlayers.com/index.php/282-online-invoicing-system-2-6-xss-session-hijackExploit, Third Party Advisory
- https://www.sevenlayers.com/index.php/282-online-invoicing-system-2-6-xss-session-hijackExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.