SQL Injection Vulnerability in FrontAccounting by FrontAccounting
CVE-2026-40523

7.2HIGH

Key Information:

Vendor

Frontaccounting

Status
Frontaccounting
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-40523?

A notable SQL injection issue exists in FrontAccounting prior to version 2.4.20, specifically within the Audit Trail report handler. This vulnerability can be exploited by authenticated users holding the SA_GLANALYTIC permission. By injecting malicious SQL queries through the PARAM_2 and PARAM_3 POST parameters, attackers are able to execute arbitrary SQL commands. Techniques such as time-based blind SQL injection leveraging SLEEP() functions can overwhelm the database, leading to denial of service scenarios by depleting available connections. Additionally, UNION-based injection strategies may facilitate unauthorized access to sensitive database information.

Affected Version(s)

FrontAccounting 0

FrontAccounting 0 < 2.4.20

FrontAccounting 647a18196caad27f96ea852e993c9e30f815357f

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-40523 - Proof of Concept

References

https://jivasecurity.com/writeups/frontaccounting-sqli-au...
technical-descriptionexploit
https://sourceforge.net/p/frontaccounting/news/2026/04/re...
release-notes
https://github.com/FrontAccountingERP/FA/commit/647a18196...
patch

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jiva (JivaSecurity)
.