How severe is GHSA-8cph-m685-6v6r?

GHSA-8cph-m685-6v6r has a CVSS score of 8.1/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-8cph-m685-6v6r?

GHSA-8cph-m685-6v6r affects the following packages: github.com/openfga/openfga (Go). Ecosystems affected: Go.

How do I fix GHSA-8cph-m685-6v6r?

Update github.com/openfga/openfga to 1.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8cph-m685-6v6r is resolved across your whole dependency graph.

How do I detect GHSA-8cph-m685-6v6r in my Go dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/openfga/openfga. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-8cph-m685-6v6r if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-8cph-m685-6v6r?

O3 pinpoints whether GHSA-8cph-m685-6v6r is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-8cph-m685-6v6r actively exploited in the wild?

No public exploit code has been indexed for GHSA-8cph-m685-6v6r yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-8cph-m685-6v6r?

GHSA-8cph-m685-6v6r has an EPSS (Exploit Prediction Scoring System) score of 0.7%, placing it in the 47th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-8cph-m685-6v6r?

GHSA-8cph-m685-6v6r is classified as CWE-863 (CWE-863). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-8cph-m685-6v6r published, and has it been updated?

GHSA-8cph-m685-6v6r was published on April 16, 2024 and was last updated on June 4, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-8cph-m685-6v6r: OpenFGA Authorization Bypass (High 8.1)

EPSS Exploitation Probability

via FIRST.org ↗

0.7%probability of exploitation in next 30 days

Lower Risk47th percentile+0.54%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

🐹github.com/openfga/openfga

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Overview

Some end users of OpenFGA v1.5.0 or later are vulnerable to authorization bypass when calling Check or ListObjects APIs.

Am I Affected?

You are very likely affected if your model involves exclusion (e.g. a but not b) or intersection (e.g. a and b) and you have any cyclical relationships. If you are using these, please update as soon as possible.

Fix

Update to v1.5.3

Backward Compatibility

This update is backward compatible.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`github.com/openfga/openfga`	≥ 1.5.0&&< 1.5.3	1.5.3

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/openfga/openfga. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update github.com/openfga/openfga to 1.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8cph-m685-6v6r is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-8cph-m685-6v6r is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-8cph-m685-6v6r. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

# Overview Some end users of OpenFGA v1.5.0 or later are vulnerable to authorization bypass when calling Check or ListObjects APIs. # Am I Affected? You are very likely affected if your model involves exclusion (e.g. `a but not b`) or intersection (e.g. `a and b`) and you have any cyclical relationships. If you are using these, please update as soon as possible. # Fix Update to v1.5.3 # Backward Compatibility This update is backward compatible.

O3 Security · Impact-Aware SCA

Is GHSA-8cph-m685-6v6r in your dependencies?

O3 detects GHSA-8cph-m685-6v6r across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

GHSA-8cph-m685-6v6r