Vulnerability in Bigprof Online Invoicing System
CVE-2021-27839
A CSV injection vulnerability found in Online Invoicing System (OIS) 4.3 and below can be exploited by users to perform malicious actions such as redirecting admins to unknown or harmful websites, or disclosing other clients' details that the user did not have access to.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% 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: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/bigprof-software/online-invoicing-system/releases/tag/4.4 (Third Party Advisory, Release Notes)
- www.jinsonvarghese.com/csv-injection-in-online-invoicing-system/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27839?
- CVE-2021-27839 is a medium-severity vulnerability in Bigprof Online Invoicing System, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 4.4/10. Published 2021-03-03.
- How severe is CVE-2021-27839?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2021-27839 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.