CVE-2021-33898
8.1 · HIGHOverview
CVE-2021-33898 is a high-severity vulnerability affecting invoiceninja invoice_ninja. It was published on June 6, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In Invoice Ninja before 4.4.0, there is an unsafe call to unserialize() in app/Ninja/Repositories/AccountRepository.php that may allow an attacker to deserialize arbitrary PHP classes. In certain contexts, this can result in remote code execution. The attacker's input must be hosted at http://www.geoplugin.net (cleartext HTTP), and thus a successful attack requires spoofing that site or obtaining control of it.
Remediation
Check the references section for vendor advisories and patches from invoiceninja. Update invoice_ninja to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| invoiceninja | invoice_ninja | >= 0, < 4.4.0 | Affected |
Frequently Asked Questions
What is CVE-2021-33898?
CVE-2021-33898 is a high-severity vulnerability affecting invoiceninja invoice_ninja. It was published on June 6, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-33898?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-33898?
Check the references section for vendor advisories and patches from invoiceninja. Update invoice_ninja to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-33898?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-33898 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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