Maxboard Remote Code Execution

published 2022-06-22 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13430

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

Stored XSS and SQL injection vulnerability in MaxBoard could lead to occur Remote Code Execution, which could lead to information exposure and privilege escalation.

Patch / fix

fixed in 1

maxb maxboard 1.9.6.1

Exploit prediction

1.52% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	9.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

MaxBoard MaxBoard

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

krcert.or.kr /krcert/secNoticeView.do?bulletin_writing_sequence=66781
third-party-advisory

Sources

CVE List CVE-2021-26636
NVD CVE-2021-26636

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary