CVE-2020-21056
MEDIUMCVSS 4.3/10EPSS 0.99%
Last modified
CVE-2020-21056 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Directory Traversal vulnerability exists in FusionPBX 4.5.7, which allows a remote malicious user to create folders via the folder variale to app\edit\foldernew.php.. EPSS estimates a 0.99% chance of exploitation in the next 30 days.
Description
Directory Traversal vulnerability exists in FusionPBX 4.5.7, which allows a remote malicious user to create folders via the folder variale to app\edit\foldernew.php.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fusionpbx | Fusionpbx | 4.5.7 |
References
- https://github.com/fusionpbx/fusionpbx/commit/cad71240dee2a82cd5766dd67039a87849031aaaPatch, Third Party Advisory
- https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-5/Third Party Advisory
- https://github.com/fusionpbx/fusionpbx/commit/cad71240dee2a82cd5766dd67039a87849031aaaPatch, Third Party Advisory
- https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-5/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-21056?
Directory Traversal vulnerability exists in FusionPBX 4.5.7, which allows a remote malicious user to create folders via the folder variale to app\edit\foldernew.php.
How severe is CVE-2020-21056?
CVE-2020-21056 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.
How do I fix CVE-2020-21056?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-21056?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST