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Vulnerabilities

Vulnerability · CVE-2025-27505

OSGeo GeoServer Missing Authorization

Published Jun 10, 2025 · catalog updated Jul 21, 2025 · OSGeo GeoServer Missing Authorization

Patch now

CVE-2025-27505 is in the CISA known-exploited catalog. Confirm OSGeo GeoServer Missing Authorization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (OSGeo GeoServer Missing Authorization).
Severity
Medium5.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.15%
Remediation
Remediation guidance
Affected products
vendor OSGeo GeoServer · vendor geoserver geoserver 2.26.0, < 2.26.3

GeoServer is an open source server that allows users to share and edit geospatial data. It is possible to bypass the default REST API security and access the index page. The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html). The REST API index can disclose whether certain extensions are installed. This vulnerability is fixed in 2.26.3 and 2.25.6. As a 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 GeoS

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor OSGeo GeoServerversion unspecified
  • vendor geoserver geoserver 2.26.0, < 2.26.32.26.0, < 2.26.3

How to fix CVE-2025-27505

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-27505 is in the CISA known-exploited catalog. Confirm OSGeo GeoServer Missing Authorization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with geoserver geoserver 2.26.0, < 2.26.3 2.26.0, < 2.26.3. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 1.15%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 21, 2025 · VulnCheck KEV

    Detected

    GeoServer is an open source server that allows users to share and edit geospatial data. It is possible to bypass the default REST API security and access the index page. The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html). The REST API index can disclose whether certain extensions are installed. This vulnerability is fixed in 2.26.3 and 2.25.6. As a

  2. Jul 21, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-27505

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-27505

    30-day exploitation probability 1.2%

    first.org
  • EUVDVulnerability recordEUVD-2025-17687

    GeoServer is an open source server that allows users to share and edit geospatial data. It is possible to bypass the default REST API security and access the index page. The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html). The REST

    euvd.enisa.europa.eu
  • VulnCheck KEVConfirmed exploitationCVE-2025-27505

    GeoServer is an open source server that allows users to share and edit geospatial data. It is possible to bypass the default REST API security and access the index page. The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html). The REST

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.