Cross-Site Scripting Vulnerability in Portabilis i-Diario Software
CVE-2025-8920

4.8MEDIUM

Key Information:

Vendor

Portabilis

Status
I-diario
Vendor
CVE Published:
13 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8920?

A security flaw exists in Portabilis i-Diario 1.6, specifically in the Dicionário de Termos BNCC component. This vulnerability arises from improper handling of input in the Planos de ensino argument within the /dicionario-de-termos-bncc file, allowing attackers to execute malicious scripts in the user’s browser. This exploit can be triggered remotely, posing significant risks to users. Despite notification attempts to the vendor regarding this issue, no response was received, highlighting the urgency for users to remain vigilant.

Affected Version(s)

i-Diario 1.6

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-2025-8920 - Proof of Concept

References

https://vuldb.com/?id.319879
vdb-entrytechnical-description
https://vuldb.com/?ctiid.319879
signaturepermissions-required
https://vuldb.com/?submit.629168
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Fernanda Martins
FeeMarb (VulDB User)
.
CVE-2025-8920 : Cross-Site Scripting Vulnerability in Portabilis i-Diario Software