CVE-2021-28373
7.5 · HIGHOverview
CVE-2021-28373 is a high-severity vulnerability affecting tt-rss tiny_tiny_rss. It was published on March 13, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The auth_internal plugin in Tiny Tiny RSS (aka tt-rss) before 2021-03-12 allows an attacker to log in via the OTP code without a valid password. NOTE: this issue only affected the git master branch for a short time. However, all end users are explicitly directed to use the git master branch in production. Semantic version numbers such as 21.03 appear to exist, but are automatically generated from the year and month. They are not releases.
Remediation
Check the references section for vendor advisories and patches from tt-rss. Update tiny_tiny_rss 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 |
|---|---|---|---|
| tt-rss | tiny_tiny_rss | >= 0, < 2021-03-12 | Affected |
References
Frequently Asked Questions
What is CVE-2021-28373?
CVE-2021-28373 is a high-severity vulnerability affecting tt-rss tiny_tiny_rss. It was published on March 13, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-28373?
This vulnerability has a CVSS 3.1 base score of 7.5, 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-2021-28373?
Check the references section for vendor advisories and patches from tt-rss. Update tiny_tiny_rss 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-2021-28373?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-28373 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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