CVE-2021-20686

Name: CVE-2021-20686
Creator: NVD / NIST
Published: 2021-04-07T08:15:14.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2021-20686 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Cross-site scripting vulnerability in Kagemai 0.8.8 allows remote attackers to inject an arbitrary script via unspecified vectors.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

Cross-site scripting vulnerability in Kagemai 0.8.8 allows remote attackers to inject an arbitrary script via unspecified vectors.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.76%

50.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Daifukuya	Kagemai	0.8.8

References

https://jvn.jp/en/jp/JVN42220311/index.htmlThird Party Advisory
https://jvn.jp/en/jp/JVN42220311/index.htmlThird Party Advisory

Timeline

Published: Apr 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20686?

Cross-site scripting vulnerability in Kagemai 0.8.8 allows remote attackers to inject an arbitrary script via unspecified vectors.

How severe is CVE-2021-20686?

CVE-2021-20686 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20686?

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-2021-20686?

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

Scan your code now

Source: NVD / NIST