Unrestricted Upload Vulnerability in LearnHouse Course Thumbnail Handler
CVE-2025-12268

5.3MEDIUM

Key Information:

Vendor

LearnHouse

Status
Learnhouse
Vendor
CVE Published:
27 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12268?

A vulnerability affects the LearnHouse platform, specifically within the Course Thumbnail Handler component. This weakness arises from an improperly secured function in the /api/v1/courses/ file, allowing attackers to manipulate the thumbnail argument for unrestricted file uploads. The exploitation of this vulnerability can be initiated remotely, posing a significant threat to users. The issue has been made public, encouraging potential exploitation. Despite being notified early about the vulnerability, the vendor has not provided any response regarding fixes or mitigations.

Affected Version(s)

LearnHouse 98dfad76aad70711a8113f6c1fdabfccf10509ca

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-2025-12268 - Proof of Concept

References

https://vuldb.com/?id.329940
vdb-entrytechnical-description
https://vuldb.com/?ctiid.329940
signaturepermissions-required
https://vuldb.com/?submit.674145
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

KhanMarshal (VulDB User)
.