Uncontrolled Recursion Vulnerability in Squirrel by albertodemichelis
CVE-2026-3388

4.8MEDIUM

Key Information:

Vendor

albertodemichelis

Status
Squirrel
Vendor
CVE Published:
1 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3388?

A vulnerability exists in Squirrel, specifically affecting versions up to 3.2, due to issues within the SQCompiler::Factor and SQCompiler::UnaryOP functions in the sqcompiler.cpp file. This flaw allows for uncontrolled recursion, which could lead to application instability or resource exhaustion. The exploit requires local access to execute, and while the vulnerability has been publicly disclosed, the project maintainers have yet to issue a patch or adequately respond to the report of this issue.

Affected Version(s)

Squirrel 3.0

Squirrel 3.1

Squirrel 3.2

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-2026-3388 - Proof of Concept

References

https://vuldb.com/?id.348274
vdb-entrytechnical-description
https://vuldb.com/?ctiid.348274
signaturepermissions-required
https://vuldb.com/?submit.761314
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
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

Oneafter (VulDB User)
.