5.5

CVE-2026-79767: gardener Incorrect Authorization

CVSS: 5.5v3.1MediumAwaiting analysis
AliasesGHSA-gfjv-gqf2-c888GO-2026-6568
Published 22-09-2026Last modified 23-09-2026
Open JSON

Vulnerability summary

CVE-2026-79767 is a medium (CVSS 5.5) Incorrect Authorization vulnerability in gardener. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.39%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 22-09-2026
    PublishedVulnerability first disclosed.
  2. 23-09-2026
    Last modifiedVulnerability information updated.

Description

Gardener implements the automated management and operation of Kubernetes clusters as a service. Prior to 1.142.6, 1.143.3, 1.144.2, and 1.145.0, the customverbauthorizer admission plugin's mustCheckProjectMembers manage-members check compares changes to User subjects but does not account for Group or ServiceAccount subjects in Project.spec.members. A project administrator who lacks manage-members permission can add arbitrary Group or ServiceAccount subjects, including the system:authenticated Group, and thereby grant broad project access. The resulting access can include Shoots, Secrets, and cloud provider credentials. This issue is fixed in versions 1.142.6, 1.143.3, 1.144.2, and 1.145.0.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

23-09-202621-10-2026
EPSS score
0.39%

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

Gardener2 products
  • gardener< 1.142.6 | ≥ 1.143.0, < 1.143.3 | ≥ 1.144.0, < 1.144.2
  • gardener≥ 1.143.0, < 1.143.3 | ≥ 1.144.0, < 1.144.2
Github.com/gardener1 product
  • gardenerAll versions (No fix recorded) | < 1.142.6

2 vendors · 3 products

References

5 links