CVE-2021-28121

9.8 criticalEPSS 1.7%

Critical (9.8) in virtual robots.txt project virtual robots.txt. EPSS 1.7% chance of exploitation in the next 30 days.

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

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
Published: 2021-08-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19