Cyber Posture

CVE-2025-0531

MediumPublic PoC

Published: 17 January 2025

Published
17 January 2025
Modified
23 October 2025
KEV Added
Patch
CVSS Score 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0006 17.5th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-0531 is a medium-severity Injection (CWE-74) vulnerability in Fabian Chat System. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.
Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

prevent

Directly mitigates SQL injection by requiring validation of untrusted inputs like the 'id' argument in /user/leaveroom.php to prevent improper neutralization of SQL special elements.

preventrecover

Ensures timely identification, reporting, and correction of flaws such as this SQL injection vulnerability through systematic remediation processes.

detect

Enables vulnerability scanning to identify SQL injection issues like CWE-89 in the chat system's /user/leaveroom.php endpoint.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
Why these techniques?

Direct remote SQL injection in a web application enables exploitation of public-facing apps (T1190) for limited data access/modification.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

A vulnerability was found in code-projects Chat System 1.0 and classified as critical. This issue affects some unknown processing of the file /user/leaveroom.php. The manipulation of the argument id leads to sql injection. The attack may be initiated remotely. The…

more

exploit has been disclosed to the public and may be used.

Deeper analysisAI

CVE-2025-0531 is a critical SQL injection vulnerability in code-projects Chat System 1.0, affecting the processing of the /user/leaveroom.php file. The issue arises from improper handling of the 'id' argument, allowing manipulation that leads to SQL injection as classified under CWE-74 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-89 (SQL Injection). The vulnerability has a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) and was published on 2025-01-17.

The vulnerability can be exploited remotely by attackers with low privileges, such as authenticated users, due to the low attack complexity and lack of required user interaction. Successful exploitation enables limited confidentiality, integrity, and availability impacts through SQL injection, potentially allowing unauthorized data access, modification, or disruption within the chat system's database.

Advisories referenced in VulDB entries (ctiid.292415, id.292415, submit.478688) document the issue, while a GitHub repository (LamentXU123/cve/blob/main/sql_injection2.md) discloses a public exploit. The code-projects.org site hosts the affected Chat System 1.0 software, but no specific patches or mitigations are detailed in the provided information. The exploit has been made publicly available and may be used by attackers.

Details

CWE(s)

Affected Products

fabian
chat system
1.0

CVEs Like This One

CVE-2025-7187Same product: Fabian Chat System
CVE-2025-7188Same product: Fabian Chat System
CVE-2025-7189Same product: Fabian Chat System
CVE-2025-7186Same product: Fabian Chat System
CVE-2025-0967Same product: Fabian Chat System
CVE-2025-0882Same product: Fabian Chat System
CVE-2025-0300Same vendor: Fabian
CVE-2026-1535Same vendor: Fabian
CVE-2026-0579Same vendor: Fabian
CVE-2026-0607Same vendor: Fabian

References