CVE-2020-8156
HIGHCVSS 7/10EPSS 0.93%
Last modified
CVE-2020-8156 is a high-severity vulnerability rated 7/10 on the CVSS scale. A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.. EPSS estimates a 0.93% chance of exploitation in the next 30 days.
Description
A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | < 1.1.4 | |
| Fedoraproject | Fedora | 32 |
References
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-020Vendor Advisory
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-020Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8156?
A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.
How severe is CVE-2020-8156?
CVE-2020-8156 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8156?
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-2020-8156?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST