Arbitrary File Read in Fusion File Manager

published 2023-09-05 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54335

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

Due to an out-of-date dependency in the “Fusion File Manager” component accessible through the admin panel, an attacker can send a crafted request that allows them to read the contents of files on the system accessible within the privileges of the running process. Additionally, they may write files to arbitrary locations, provided the files pass the application’s mime-type and file extension validation.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-26)

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
NVD	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

Affected products

PHPFusion PHPFusion

Classification

Weakness

CWE-538 Insertion of Sensitive Information into Externally-Accessible File or Directory
CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

synopsys.com /blogs/software-security/cyrc-vulnerability-advisory-cve-2023-2453/
third-party-advisory

Sources

CVE List CVE-2023-4480
NVD CVE-2023-4480

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Summary