CVE-2021-26628

Name: CVE-2021-26628
Creator: NVD / NIST
Published: 2022-04-26T19:15:48.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2021-26628 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.

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

0.73%

49.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Maxb	Maxboard	< 1.9.6.1

References

https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66673Third Party Advisory
https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66673Third Party Advisory

Timeline

Published: Apr 26, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26628?

How severe is CVE-2021-26628?

CVE-2021-26628 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26628?

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-2021-26628?

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

Scan your code now

Source: NVD / NIST