Classcms v2.5 and below contains an arbitrary file upload via the component \class\classupload.

published 2022-03-18 4y ago modified 2026-06-17 4mo ago also EUVD-2022-30242

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits: 0; none known

Classcms v2.5 and below contains an arbitrary file upload via the component \class\classupload. This vulnerability allows attackers to execute code injection via a crafted .txt file.

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Exploit prediction

1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/k0xx11/Vulscve/blob/master/classcms2.5-rce.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

References

github.com /k0xx11/Vulscve/blob/master/classcms2.5-rce.md
exploit, third-party-advisory

Sources

CVE List CVE-2022-25581
NVD CVE-2022-25581

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