GeoServer Infinite Loop Vulnerability in Jiffle process

Description

Summary

Malicious Jiffle scripts can be executed by GeoServer, either as a rendering transformation in WMS dynamic styles or as a WPS process, that can enter an infinite loop to trigger denial of service.

Details

The Jiffle language supports multiple loop constructs that will cause its code block to be continuously executed until a certain condition is met. The Jiffle runtime should be updated to throw an exception if the script exceeds a certain number of loop iterations.

Impact

This vulnerability allows attackers to conduct denial-of-service attacks.

Mitigation

This vulnerability can be mitigated by disabling WMS dynamic styling (see WMS Settings).
If the WPS extension is installed, the Jiffle process must also be disabled to mitigate this vulnerability (see WPS Settings)

References

https://github.com/geosolutions-it/jai-ext/pull/307
https://osgeo-org.atlassian.net/browse/GEOS-11778

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-06-10 19:44:31 UTC
Updated
2025-06-10 19:44:32 UTC
GitHub reviewed
2025-06-10 19:44:31 UTC
NVD published
2025-06-10

EPSS Score

Score Percentile
0.14% 34.31%

CVSS Scores

Base score Version Severity Vector
7.5 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Credits

  • sikeoka (reporter)

Affected packages (6)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven org.geoserver.web:gs-web-app >= 2.26.0, <= 2.26.2 2.26.3
maven org.geoserver:gs-wms >= 2.26.0, <= 2.26.2 2.26.3
maven org.geoserver.extension:gs-wps-core >= 2.26.0, <= 2.26.2 2.26.3
maven org.geoserver.web:gs-web-app <= 2.25.6 2.25.7
maven org.geoserver:gs-wms <= 2.25.6 2.25.7
maven org.geoserver.extension:gs-wps-core <= 2.25.6 2.25.7

References

cvelogic Threat Intelligence