Improper Privilege Management in StackStorm API Key Handler
CVE-2026-85514

5.3MEDIUM

Key Information:

Vendor

Stackstorm

Status
St2
Vendor
CVE Published:
4 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-85514?

A vulnerability has been identified in the StackStorm st2 API Key Handler, affecting versions up to 3.9.0. This issue arises from an unidentified flaw in the file st2api/st2api/controllers/v1/auth.py, specifically concerning the manipulation of the api_key_api.user argument, leading to improper privilege management. An attacker can exploit this vulnerability remotely, which poses a significant risk to the integrity of the system. The vulnerability has been publicly disclosed, and despite early notification to the project team through an issue report, no response has been received regarding remediation.

Affected Version(s)

st2 3.0

st2 3.1

st2 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-2026-85514 - Proof of Concept

References

https://vuldb.com/vuln/398679
vdb-entrytechnical-description
https://vuldb.com/vuln/398679/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-85514
third-party-advisory

CVSS V4

Score:
5.3
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

geochen (VulDB User)
VulDB CNA Team
.