my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot file (disguised as JPEG) via the image upload feature, trigger Phar deserialization through BBCode [img] tag processing, and exploit Smarty 4.1.0 POP chain to achieve arbitrary file deletion. This vulnerability is fixed in 20260208.1.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00066.

Exploitation poc

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
My Little Forum Subscribe
My Little Forum Subscribe

No data.

No data.

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Vendors Products
My Little Forum Subscribe
My Little Forum Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/My-Little-Forum/mylittleforum/releases/tag/20260208.1 cve-icon cve-icon
https://github.com/My-Little-Forum/mylittleforum/security/advisories/GHSA-wr9p-3c3g-78fw cve-icon cve-icon
History

Wed, 11 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 10 Feb 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared My Little Forum
My Little Forum my Little Forum
Vendors & Products My Little Forum
My Little Forum my Little Forum

Mon, 09 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
Description my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot file (disguised as JPEG) via the image upload feature, trigger Phar deserialization through BBCode [img] tag processing, and exploit Smarty 4.1.0 POP chain to achieve arbitrary file deletion. This vulnerability is fixed in 20260208.1.
Title Phar Deserialization leading to Arbitrary File Deletion in my little forum
Weaknesses CWE-434
CWE-502
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-11T21:20:25.222Z

Reserved: 2026-02-09T16:22:17.785Z

Link: CVE-2026-25923

cve-icon Vulnrichment

Updated: 2026-02-11T21:20:22.850Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-09T22:16:04.460

Modified: 2026-02-10T15:22:54.740

Link: CVE-2026-25923

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-10T15:37:24Z

Weaknesses