Vulnerability in Fb55 Fb55/nth-Check
CVE-2021-3803
nth-check is vulnerable to Inefficient Regular Expression Complexity
Vulnerability class: ReDoS (Regular Expression Denial of Service)
EPSS: 0.022 (80.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Fb55 Fb55/nth-check — versions unspecified
- Nth-check_project Nth-check
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@huntr.dev (Exploit, Patch, Third Party Advisory, Issue Tracking)
- security@huntr.dev (Patch, Third Party Advisory)
- security@huntr.dev (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3803?
- CVE-2021-3803 is a high-severity vulnerability in Fb55 Fb55/nth-Check, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2021-09-17.
- How severe is CVE-2021-3803?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3803 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.