Overview
The CVE-2025-30145 is a high-severity vulnerability discovered in GeoServer, an open-source server that facilitates the sharing and editing of geospatial data. This vulnerability allows malicious Jiffle scripts to trigger a denial of service (DoS) attack. This report details the nature of the exploit, its potential impact, and steps towards mitigation.
Vulnerability Summary
CVE ID: CVE-2025-30145
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
GeoServer | < 2.25.7 GeoServer | < 2.26.3 GeoServer | < 2.27.0 How the Exploit Works
The vulnerability is exploited by sending malicious Jiffle scripts to GeoServer. These scripts can be executed either as a rendering transformation in WMS dynamic styles or as a WPS process. Once executed, the malicious script enters an infinite loop, effectively triggering a denial of service attack on the GeoServer.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited. In this instance, a malicious Jiffle script is sent to the GeoServer via an HTTP POST request:
POST /geoserver/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "jiffle_script": "while(true) {}" }The script `while(true) {}` will run indefinitely, consuming resources and eventually leading to a denial of service.
Mitigation Guidance
To safeguard against this vulnerability, users are advised to either apply the vendor patch (GeoServer versions 2.27.0, 2.26.3, or 2.25.7) or disable WMS dynamic styling and the Jiffle process. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation.
