CVE-2024-45747
GeoServer Server-Side Template Injection Remote Code Execution
Description
### Summary A server-side template injection (SSTI) vulnerability exist that allows an authenticated administrator to upload FreeMarker templates containing malicious content that can execute OS commands and read from or write to arbitrary files on the server. These FreeMarker templates are used in a plain GeoServer instance (no extension or community modules) for WMS GetFeatureInfo HTML and JSON and WMS GetMap KML and GeoRSS output formats. ### Details The org.geoserver.template.TemplateUtils.getSafeConfiguration() method attempts to block access to the class freemarker.template.utility.Execute but it is still possible to gain access to it and other sensitive functionality by chaining a specific sequence of method calls. ### Impact This vulnerability can lead to executing arbitrary code and reading and writing arbitrary files. ### Resolution GeoServer 2.27.0 addresses this vulnerability with several new application properties: * ``GEOSERVER_FREEMARKER_BLOCK_LIST`` * ``GEOSERVER_FREEMARKER_ALLOW_LIST`` * ``GEOSERVER_FREEMARKER_API_EXPOSED`` These application properties default to restricting the objects template authors can access, and limit access to "getter" methods used to access object properties.
INFO
Published Date :
Aug. 19, 2026, 7:31 p.m.
Last Modified :
Aug. 19, 2026, 7:31 p.m.
Remotely Exploit :
Yes !
Source :
github-security-advisories
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | github |
Solution
- Update GeoServer to 2.27.0 or higher.
- Configure new application properties for FreeMarker.
- Restrict access to template objects.
- Limit access to getter methods.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-45747.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-45747 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-45747
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-45747 vulnerability anywhere in the article.