CVE-2021-47904

PhreeBooks 5.2.3 - Remote Code Execution

CVSS 8.7 HIGHEPSS 0.6%CWE-434

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Phreesoft · PhreeBooks

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

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