CVE-2025-61505
e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php` script. The...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-61505- 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 - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2025-33763
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.
- Record
EUVD-2025-33763- 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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fh75-ffj9-cpm7
e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php` script. The...
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.
- Record
GHSA-fh75-ffj9-cpm7- 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 - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-61505- 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 - Weakness
- CWE-502
- Updated
- 2026-11-05
OSV
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.
- Record
CVE-2025-61505- 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 - Updated
- 2026-11-07
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | pescada-dev/CVE-2025-61505 | 2026-01-31 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-61505 is a medium vulnerability (CVSS 6.5) in E107, published October 10, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. No source names a fixed version.