Server-Side Request Forgery (SSRF) in geoserver - CVE-2023-41339
Published: October 24, 2023 / Updated: May 5, 2026
Vulnerability identifier: #VU129761
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-41339
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: geoserver
Affected software:
geoserver
geoserver
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to server-side request forgery in the WMS endpoint when processing user-supplied sld URL parameters in GetMap, GetLegendGraphic, or GetFeatureInfo requests. A remote attacker can send a specially crafted request to disclose sensitive information.
Exploitation requires dynamic styling to be enabled and URL checks to be disabled or configured to allow file access.
How to mitigate CVE-2023-41339
Install security update from vendor's website.