Unauthorized access to fields protected by Field Masking (FM) for fields of type IP
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
In Search Guard versions 3.1.1 and earlier, Field Masking (FM) rules are improperly enforced on fields of type IP (IP Address). While the content of these fields is properly redacted in the _source document returned by search operations, the results do return documents (hits) when searching based on a specific IP values. This allows to reconstruct the original contents of the field. Workaround - If you cannot upgrade immediately, you can avoid the problem by using field level security (FLS) protection on fields of the affected types instead of field masking.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-12148
- 2026-10-03 Alias added: GHSA-p868-4f8c-8pq7
References
More floragunn vulnerabilities
- TI-2019-10092 Improper authentication in floragunn Search Guard Kibana Plugin CVSS 3.1HIGH 8.8
- TI-2026-04202 Some management operations on data streams are not properly restricted when user does not have the necessary privileges CVSS 3.1HIGH 8.1
- TI-2019-10088 Search Guard versions before 23.1 had an issue that for aggregations clear text values of anonymised fields were leaked. CVSS 3.0HIGH 7.5
- TI-2019-10087 Search Guard versions before 24.0 had an issue that values of string arrays in documents are not properly anonymized. CVSS 3.1HIGH 7.5
- TI-2019-10085 Improper authorization in floragunn Search Guard CVSS 3.1MEDIUM 6.5
- TI-2019-10084 Search Guard versions before 24.3 had an issue when Cross Cluster Search (CCS) was… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2025-12148 · CVE Program
- CVE-2025-12148 · NVD
- FIRST EPSS
- GHSA-p868-4f8c-8pq7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences