Vulnerability in Virtual Robots.txt Project

CVE-2021-28121

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

EPSS: 0.017 (74.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Virtual_robots.txt_project Virtual_robots.txt
N/a — versions n/a

Public proof-of-concept exploits

20142995/nuclei-templates

References

cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28121?: CVE-2021-28121 is a critical-severity vulnerability in Virtual Robots.txt Project. CVSS score: 9.8/10. Published 2021-08-12.
How severe is CVE-2021-28121?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-28121 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.