Expression Language Manipulation in xiandafu Beetl Product
CVE-2026-8759

6.9MEDIUM

Key Information:

Vendor

Xiandafu

Status
Beetl
Vendor
CVE Published:
17 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8759?

A security vulnerability has been identified in the xiandafu Beetl framework, specifically within the SpELFunction component. The issue arises from the improper handling of special characters in expression language statements, allowing attackers to exploit the function remotely. Despite receiving early notifications of the vulnerabilities through reports, there has been a lack of response or resolution from the project maintainers. Publicly available exploits may be leveraged against unpatched versions, underscoring the urgency for users to adopt security measures.

Affected Version(s)

beetl 3.20.0

beetl 3.20.1

beetl 3.20.2

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-2026-8759 - Proof of Concept

References

https://vuldb.com/vuln/364386
vdb-entry
https://vuldb.com/vuln/364386/cti
signaturepermissions-required
https://vuldb.com/submit/811316
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

pigpig (VulDB User)
VulDB CNA Team
.