Path Traversal in blackms aistack Affecting Static File Handler Functionality
CVE-2026-81560

6.9MEDIUM

Key Information:

Vendor

Blackms

Status
Aistack
Vendor
CVE Published:
27 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-81560?

A vulnerability exists in blackms aistack up to version 1.6.1, impacting the Static File Handler component located in src/web/server.ts. This flaw allows for path traversal due to improper handling of the req.url argument, which can be exploited remotely. The exploit code is publicly accessible, posing a significant risk to affected users. The development team has been made aware of this issue through a prior report but has yet to issue a response or patch.

Affected Version(s)

aistack 1.6.0

aistack 1.6.1

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-2026-81560 - Proof of Concept

References

https://vuldb.com/vuln/396057
vdb-entrytechnical-description
https://vuldb.com/vuln/396057/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-81560
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

cccccccti (VulDB User)
VulDB CNA Team
.