CVE-2025-27505
High PUBLISHEDGeoServer Missing Authorization on REST API Index
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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 GeoServer.
- CVE Published
- Jun 10, 2025
- Exploitation Reported
- Nov 20, 2025
- CVSS
- 5.3 Medium
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| geoserver |
geoserver
|
>= 2.26.0, < 2.26.3 |
Affected |
| geoserver |
geoserver
|
< 2.25.6 |
Affected |
CVE References
- https://github.com/geoserver/geoserver/security/advisories/GHSA-h86g-x8mm-78m5 github.com · CVE Record https://github.com/geoserver/geoserver/security/advisories/GHSA-h86g-...
- https://github.com/geoserver/geoserver/pull/8170 github.com · CVE Record https://github.com/geoserver/geoserver/pull/8170
- https://osgeo-org.atlassian.net/browse/GEOS-11664 osgeo-org.atlassian.net · CVE Record https://osgeo-org.atlassian.net/browse/GEOS-11664
- https://osgeo-org.atlassian.net/browse/GEOS-11776 osgeo-org.atlassian.net · CVE Record https://osgeo-org.atlassian.net/browse/GEOS-11776
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2025-11-20 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-27505.yaml | Jun 01, 2026 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploitation Status
Exploited in the wild
Recorded 2025-11-20 00:00:00 UTC · The Shadowserver
Proof of concept available
Recorded 2026-06-12 14:21:06 UTC · Nuclei Templates
Weaknesses (CWE)
-
Missing Authorization
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-27505.yaml | Jun 01, 2026 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:21 UTC about 1 month ago14:21 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
15:34 UTC about 2 months ago15:34 UTC · about 2 months ago
Nuclei template available
Scanner coverage available
-
00:00 UTC 8 months ago00:00 UTC · 8 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
14:52 UTC about 1 year ago14:52 UTC · about 1 year ago
CVE published
Vulnerability disclosed publicly
-
18:11 UTC over 1 year ago18:11 UTC · over 1 year ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2025-27505
{
"cve_id": "CVE-2025-27505",
"title": "GeoServer Missing Authorization on REST API Index",
"affected_vendor": "geoserver",
"affected_product": "geoserver",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 5.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}