8.1

CVE-2026-55689: openfga helm_charts Improper Authentication

CVSS: 8.1v3.1HighAnalyzed
AliasesCGA-5gh5-jgrj-8rjwCGA-j4h7-78h6-prvgCGA-m538-2frg-7c85
Published 09-07-2026Last modified 10-07-2026
Open JSON

Vulnerability summary

CVE-2026-55689 is a high (CVSS 8.1) Improper Authentication vulnerability in openfga helm_charts. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.7% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 2
OPENSUSE-SU-2026:21483-1CGA-W2J4-29MM-QPF7

Timeline

  1. 09-07-2026
    PublishedVulnerability first disclosed.
  2. 10-07-2026
    Last modifiedVulnerability information updated.

Description

OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

0.00 pp

From 0.41% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.41%

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

Chainguard20 products
  • commercial-grafana-11.6All versions (No fix recorded)
  • commercial-grafana-12.1All versions (No fix recorded)
  • commercial-grafana-12.2All versions (No fix recorded)
  • commercial-grafana-12.3All versions (No fix recorded)
  • commercial-grafana-12.4< 12.4.6-r0
Openfga2 products
Wolfi2 products
  • grafana-12.3< 12.3.8-r2
  • grafana-12.4< 12.4.5-r2
Github.com/openfga1 product
  • openfga< 1.18.0

4 vendors · 25 products

References

8 links