CVE-2025-27505Network attack vector

Extension disclosure via REST path-filter bypass

Published Jun 10, 2025 · Updated Jun 10, 2025

Missing authorization in GeoServer before 2.25.6 and 2.26.0 through 2.26.2 allows remote attackers to view the REST API index. The default security path matcher protects /rest and its subpaths but fails to match extension-suffixed forms such as /rest.html. No authentication is required; a crafted request reveals which GeoServer extensions are installed without permitting data changes or service interruption.

CVSS severity5.3
Medium
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in GeoServer before 2.25.6 and 2.26.0 through 2.26.2 allows remote attackers to view the REST API index. The default security path matcher protects /rest and its subpaths but fails to match extension-suffixed forms such as /rest.html. No authentication is required; a crafted request reveals which GeoServer extensions are installed without permitting data changes or service interruption.

The record

CVE
CVE-2025-27505
Published
Jun 10, 2025
Updated
Jun 10, 2025
Vendor
GeoWebCache
Product
GeoServer
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.25.6
  2. Affected versionversion=>= 2.26.0, < 2.26.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GeoWebCache · GeoServerversion=< 2.25.6; version=>= 2.26.0, < 2.26.3

Published CVSS scores

5.3GitHub Maintainer AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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