CVE-2021-41921

Name: CVE-2021-41921
Creator: NVD / NIST
Published: 2022-04-28T13:15:08.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.57%

Last modified Jun 17, 2026

CVE-2021-41921 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. novel-plus V3.6.1 allows unrestricted file uploads. Unrestricted file suffixes and contents can lead to server attacks and arbitrary code execution.. EPSS estimates a 1.57% chance of exploitation in the next 30 days.

Description

novel-plus V3.6.1 allows unrestricted file uploads. Unrestricted file suffixes and contents can lead to server attacks and arbitrary code execution.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.57%

72.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Xxyopen	Novel-Plus	3.6.1

References

https://github.com/201206030/novel-plus/issues/62Exploit, Issue Tracking, Third Party Advisory
https://github.com/201206030/novel-plus/issues/62Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Apr 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41921?

novel-plus V3.6.1 allows unrestricted file uploads. Unrestricted file suffixes and contents can lead to server attacks and arbitrary code execution.

How severe is CVE-2021-41921?

CVE-2021-41921 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.57% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41921?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41921?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST