TI-2025-38009 Aliases CVE-2025-61505 GHSA-fh75-ffj9-cpm7

e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php`…

LOW 31CWE-502Published 2025-10-10 · Updated 2026-02-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00358 29th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:e107:e107::::::::	up to 2.3.3	Vulnerable	e107

cpe:2.3:a:e107:e107:*:*:*:*:*:*:*:* Versions up to 2.3.3 Vulnerable ·e107

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-61505
2026-10-03 Alias added: GHSA-fh75-ffj9-cpm7

References

Advisory 1

https://xancatos.org/cve202561505

Other 1

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

TI-2022-26359 e107 CMS v3.2.1 - Reflected XSS via Comment Flow CVSS 3.1CRITICAL 9.8
TI-2022-26369 e107 CMS v3.2.1 - Upload restriction bypass (Authenticated [Admin])+ Server file override CVSS 4.0HIGH 8.7
TI-2022-26391 e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File Override CVSS 4.0HIGH 8.6
TI-2022-26361 e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCE CVSS 4.0HIGH 8.6
TI-2023-18122 Cross Site Scripting vulnerability in e107 v.2.3.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 5.4
TI-2025-10948 e107 CMS Avatar image.php path traversal CVSS 4.0MEDIUM 5.3

See all 76 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences