Authentication Bypass Vulnerability in REMS by OpsTree
CVE-2026-126768

9.3CRITICAL

Key Information:

Vendor

Opstree Solutions

Status
Rems
Vendor
CVE Published:
11 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-126768?

The REMS product by OpsTree, up to version 1.0.0, is susceptible to an authentication bypass scenario. By manipulating the is_local_auth field, attackers can craft a POST request to /api/v1/user/login/ for the admin account with an incorrect password and is_local_auth set to true. This allows unauthorized users to generate valid JSON Web Tokens (JWTs), granting them SuperUser administrative access and compromising the security of the application.

Affected Version(s)

REMS 0 <= 1.0.0

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-2026-126768 - Proof of Concept

References

https://gist.github.com/neelkotnis/4676fe10859d84900025cf...
technical-descriptionexploit
https://opstree.com/rems-ai-powered-observability/
product
https://www.vulncheck.com/advisories/opstree-rems-through...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
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

Neel Saurabh Kotnis
.