CVE-2021-47734
highpriority · track · 0EPSS 0.008 · 56 %ileEUUSEPSS · scored 2026-10-27
CMSimple 5.4 contains an authenticated local file inclusion vulnerability that allows remote attackers to manipulate PHP session files and execute arbitrary code. Attackers can leverage the vulnerability by changing the functions file path and uploading malicious PHP code through session file upload mechanisms.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.1–8.6
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://www.cmsimple.org/en/cnnvd
- https://www.exploit-db.com/exploits/50547cnnvd
- https://www.vulncheck.com/advisories/cmsimple-authenticated-local-file-inclusion-remote-code-executioncnnvd
- https://www.cmsimple.org/en/enisa_euvd
- https://www.exploit-db.com/exploits/50547enisa_euvd
- https://www.vulncheck.com/advisories/cmsimple-authenticated-local-file-inclusion-remote-code-executionenisa_euvd
- https://www.cmsimple.org/en/Productnvd
- https://www.exploit-db.com/exploits/50547Exploitnvd
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