Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters (SUSE Rancher)

CVE-2026-88808
HIGH 8.8

At a glance

Source
NVD
EPSS
EPSS 0.28 % · percentile 20 ()
State
PUBLISHED
Published
Updated
Assigner
suse
NVD status
Analyzed

Description

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files. This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.

Weaknesses (CWE)

  • CWE-250 — Execution with Unnecessary Privileges

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsuse
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · meissner@suse.de (Secondary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
SUSE · Rancheraffected 0.16.0 < 0.16.2 ; affected 0.15.0 < 0.15.7 ; affected 0.14.0 < 0.14.11

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD