Vulnerability · Published Oct 29, 2025 · Assigned by floragunn
CVE-2025-12148Unauthorized access to fields protected by Field Masking (FM) for fields of type IP
Medium 6.0
In plain English
A medium-severity information exposure in Search Guard FLX from floragunn. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| floragunn | Search Guard FLX | 1.0.0 – through 3.1.1 |
Weakness: CWE-200, CWE-732 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N