Code injection in MCMS

published 2022-05-27 4 y ago modified 2026-06-17 4 mo ago also GHSA-6xj9-hpq3-w3qw , EUVD-2022-5967

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.7%; EPSS 2.7% chance of exploitation in 30 days, percentile 86%
public exploits: 0; none known

An arbitrary file upload vulnerability was discovered in MCMS 5.2.7, allowing an attacker to execute arbitrary code through a crafted ZIP file.

Exploit prediction

2.73% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gitee.com https://gitee.com/mingSoft/MCMS/issues/I56AID referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	net.mingsoft:ms-mcms	<=5.2.7	no fix listed

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

gitee.com /mingSoft/MCMS/issues/I56AID
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-30506
advisory
gitee.com /mingSoft/MCMS
package

Sources

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