Improper Authorization Vulnerability in OpsTree REMS
CVE-2026-126766

5.3MEDIUM

Key Information:

Vendor

Opstree Solutions

Status
Rems
Vendor
CVE Published:
11 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-126766?

OpsTree REMS versions up to 1.0.0 are affected by an improper authorization vulnerability that compromises the integrity of incident reporting. Authenticated users can exploit this flaw by manipulating the reporter field in incident requests. This enables attackers to attribute incidents to unintended users, thereby undermining accountability and potentially leading to a corrupted audit trail. Specifically, crafted POST /api/v1/incidents and PATCH /api/v1/incidents/{id}/status requests can be utilized to facilitate this exploitation, posing serious risks to incident management and reporting integrity.

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-2026-126766 - Proof of Concept

References

https://gist.github.com/neelkotnis/e11fb4f70d8ec850fa6015...
technical-descriptionexploit
https://opstree.com/rems-ai-powered-observability/
product
https://www.vulncheck.com/advisories/opstree-rems-through...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
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

Neel Saurabh Kotnis
.