What’s Vulnerable › Vulnerabilities

CVE-2021-27839

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-03 · updated 2026-06-17
• Weakness: CWE-1236

Description

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.

Affected products

• BigProf Online Inventory Manager: through 4.3

References

• https://github.com/bigprof-software/online-invoicing-system/releases/tag/4.4
• https://www.jinsonvarghese.com/csv-injection-in-online-invoicing-system/
• https://github.com/bigprof-software/online-invoicing-system/releases/tag/4.4
• https://www.jinsonvarghese.com/csv-injection-in-online-invoicing-system/

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