High 8.8Published Jan 23, 2026

CVE-2021-47904PhreeBooks 5.2.3 - Remote Code Execution

Updated under an hour ago (Oct 27, 2026, 4:30 PM ET)

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Every CVE for Phreesoft PhreeBooks

Exploited in the last 30 days

PhreeBooks 5.2.3 contains an authenticated file upload vulnerability in the Image Manager that allows remote code execution. Attackers can upload a malicious PHP web shell by exploiting unrestricted file type uploads to gain command execution on the server.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-434
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Phreesoft PhreeBooks phreesoft:phreebooks (from the name)	5.2.3	CNA record

References

References

https://www.exploit-db.com/exploits/49524	exploit
https://www.phreesoft.com/	product
https://www.exploit-db.com/exploits/46645	exploit
https://gist.github.com/joswr1ght/22f40787de19d80d110b37fb79ac3985	product
https://www.vulncheck.com/advisories/phreebooks-remote-code-execution	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.