CVE-2021-47904

8.7 highEPSS 0.7%

High (8.7). EPSS 0.7% chance of exploitation in the next 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.

Severity

CVSS 4.0

8.7 high

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

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2026-01-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

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

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