Answer in brief
CVE-2026-55170 records a Medium severity (CVSS 5.4) vulnerability in OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions. The current sources do not mark it as known exploited. The current feed maps openfga/openfga (generic), github.com/openfga/openfga (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-55170 records a Medium severity (CVSS 5.4) vulnerability in OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions. The current sources do not mark it as known exploited. The current feed maps openfga/openfga (generic), github.com/openfga/openfga (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps openfga/openfga (generic), github.com/openfga/openfga (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| openfga/openfgageneric | < 1.18.0 | Not reported |
| github.com/openfga/openfgago | <1.18.0 | 1.18.0 |
Published upstream
Jul 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, when MySQL is being used as the datastore and authorization decisions rely on case-sensitive user strings, the tuple, changelog, and authorization_model identifier columns can compare case-distinct values such as user:Alice and user:alice as equivalent, causing two distinct check requests to return the same response. This issue is fixed in 1.18.0.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps openfga/openfga (generic), github.com/openfga/openfga (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| openfga/openfgageneric | < 1.18.0 | Not reported |
| github.com/openfga/openfgago | <1.18.0 | 1.18.0 |
Published upstream
Jul 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, when MySQL is being used as the datastore and authorization decisions rely on case-sensitive user strings, the tuple, changelog, and authorization_model identifier columns can compare case-distinct values such as user:Alice and user:alice as equivalent, causing two distinct check requests to return the same response. This issue is fixed in 1.18.0.
Quoted source text, attributed separately from HOL analysis.