CVE-2025-61505

6.5 mediumEPSS 0.4%

Medium (6.5) in e107 e107. EPSS 0.4% chance of exploitation in the next 30 days.

e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php` script. The script processes user-controlled input in the `previous_steps` POST parameter using `unserialize(base64_decode())` without validation, allowing attackers to craft malicious serialized data. This could lead to remote code execution, arbitrary file operations, or denial of service, depending on available PHP object gadgets in the codebase.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 29% of CVEs (scores of 2026-10-31)
CWE: CWE-502
Published: 2025-10-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

e107:e107

References

https://github.com/e107inc/e107/blob/master/install.php
https://xancatos.org/cve202561505

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