CVE-2021-20718
HIGHCVSS 7.5/10EPSS 3.40%
Last modified
CVE-2021-20718 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. mod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.. EPSS estimates a 3.40% chance of exploitation in the next 30 days.
Description
mod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openidc | Mod Auth Openidc | >= 2.4.0, <= 2.4.7 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
| Oracle | Essbase | < 21.3 |
References
- https://github.com/zmartzone/mod_auth_openidcProduct, Third Party Advisory
- https://jvn.jp/en/jp/JVN49704918/index.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlThird Party Advisory
- https://www.zmartzone.eu/Vendor Advisory
- https://github.com/zmartzone/mod_auth_openidcProduct, Third Party Advisory
- https://jvn.jp/en/jp/JVN49704918/index.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlThird Party Advisory
- https://www.zmartzone.eu/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20718?
mod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.
How severe is CVE-2021-20718?
CVE-2021-20718 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.40% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20718?
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-2021-20718?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST