Path Traversal Vulnerability in Colanode Server Affects User Data Access
CVE-2026-110766

5.3MEDIUM

Key Information:

Vendor

Colanode

Status
Colanode
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-110766?

Colanode Server versions up to 0.4.7 are vulnerable to a path traversal issue, allowing authenticated users to gain unauthorized access to .jpeg files. This can be exploited by using encoded traversal sequences in the avatarId parameter. By sending specially crafted GET requests that navigate beyond the intended directories, attackers can access and read image files associated with different user workspaces. This vulnerability poses a risk to user privacy and data integrity.

Affected Version(s)

colanode 0 <= 0.4.7

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-2026-110766 - Proof of Concept

References

https://hackmd.io/@hieuPenguinnn/colanode-avatar-download...
technical-descriptionexploit
https://github.com/colanode/colanode/blob/d649523637f0f05...
technical-description
https://github.com/colanode/colanode/blob/d649523637f0f05...
technical-description

CVSS V4

Score:
5.3
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

hieuPenguinnn
.