6.5

CVE-2023-40579: openfga Improper Access Control

CVSS: 6.5v3.1MediumModified
AliasesGHSA-jcf2-mxr2-gmqpGO-2023-2028
Published 25-08-2023Last modified 01-10-2024
Open JSON

Vulnerability summary

CVE-2023-40579 is a medium (CVSS 6.5) Improper Access Control vulnerability in openfga. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.6% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.55%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-08-2023
    PublishedVulnerability first disclosed.
  2. 01-10-2024
    Last modifiedVulnerability information updated.

Description

OpenFGA is an authorization/permission engine built for developers and inspired by Google Zanzibar. Some end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. The vulnerability affects customers using `ListObjects` with specific models. The affected models contain expressions of type `rel1 from type1`. This issue has been patched in version 1.3.1.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

0.00 pp

From 0.55% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.55%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/openfga1 product
  • openfga< 1.3.1
Openfga1 product

2 vendors · 2 products

References

4 links