Cross-Site Scripting Vulnerability in Fengoffice Software from Feng Office
CVE-2026-90497

5.1MEDIUM

Key Information:

Vendor

Fengoffice

Status
Feng Office
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90497?

A cross-site scripting vulnerability exists in the Fengoffice software, specifically within the getTitle function of the add_task.php file in the Task Title Output component. An attacker can exploit this issue by manipulating the og_objects.name argument, potentially allowing malicious scripts to be executed in the context of a user's session. This remote exploit has been disclosed publicly, raising concerns for users of affected versions. Despite the disclosure, the vendor has not provided any response regarding this issue.

Affected Version(s)

Feng Office 3.11.13.0

Feng Office 3.11.13.1

Feng Office 3.11.13.2

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-2026-90497 - Proof of Concept

References

https://vuldb.com/vuln/403085
vdb-entrytechnical-description
https://vuldb.com/vuln/403085/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90497
third-party-advisory

CVSS V4

Score:
5.1
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

ciphersecuritylabs (VulDB User)
VulDB CNA Team
.