SEPTEMBER 30, 2026
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Case File

CVE-2021-28121

CRITICAL · CVSS 9.8 EPSS 1.67%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-12 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2021-28121
Severity
CRITICAL
CVSS
9.8
EPSS
1.67%

Original NVD Description

Virtual Robots.txt before 1.10 does not block HTML tags in the robots.txt field.