AUGUST 5, 2026
Live Feed
Back to database
Case File

CVE-2021-31810

MEDIUM · CVSS 5.8 EPSS 3.05%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-07-13 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.8. See the original NVD description below for full technical details.

CVE
CVE-2021-31810
Severity
MEDIUM
CVSS
5.8
EPSS
3.05%

Original NVD Description

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).

Related CVEs

Other vulnerabilities affecting the same vendor(s)