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GeoServer Missing Authorization on REST API Index

Moderate severity GitHub Reviewed Published Jun 10, 2025 in geoserver/geoserver • Updated Jun 10, 2025

Package

maven org.geoserver.web:gs-web-app (Maven)

Affected versions

>= 2.26.0, < 2.26.3
< 2.25.6

Patched versions

2.26.3
2.25.6
maven org.geoserver:gs-rest (Maven)
>= 2.26.0, < 2.26.3
< 2.25.6
2.26.3
2.25.6

Description

Summary

It is possible to bypass the default REST API security and access the index page.

Details

The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html).

Impact

The REST API index can disclose whether certain extensions are installed.

Workaround

In ${GEOSERVER_DATA_DIR}/security/config.xml, change the paths for the rest filter to /rest.*,/rest/** and change the paths for the gwc filter to /gwc/rest.*,/gwc/rest/** and restart GeoServer.

References

https://osgeo-org.atlassian.net/browse/GEOS-11664
https://osgeo-org.atlassian.net/browse/GEOS-11776
geoserver/geoserver#8170

References

@jodygarnett jodygarnett published to geoserver/geoserver Jun 10, 2025
Published by the National Vulnerability Database Jun 10, 2025
Published to the GitHub Advisory Database Jun 10, 2025
Reviewed Jun 10, 2025
Last updated Jun 10, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(11th percentile)

Weaknesses

CVE ID

CVE-2025-27505

GHSA ID

GHSA-h86g-x8mm-78m5

Source code

Credits

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