Vulnerability · Published Jul 2, 2026 · Assigned by suse
CVE-2026-44935Rancher Fleet vulnerable to cross namespace secret disclosure via unvalidated `valuesFrom` references in Helm Deployer
Critical 9.9
In plain English
A critical-severity security flaw in Rancher from SUSE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.5%top 57.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Missing validation of "valuesFrom" references in Helm Deployer of SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 could be used by owners of one tenant to access fleet credentials of other tenants.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/rancher/fleet | 0.15.2 | GHSA-xr65-5cpm-g36x |
| Go | github.com/rancher/fleet | 0.14.6 | GHSA-xr65-5cpm-g36x |
| Go | github.com/rancher/fleet | 0.13.11 | GHSA-xr65-5cpm-g36x |
| Go | github.com/rancher/fleet | 0.12.15 | GHSA-xr65-5cpm-g36x |
| Go | github.com/rancher/fleet | 0.12.15, 0.13.11, 0.14.6, 0.15.2 | GO-2026-5877 |
Affected products (as reported)
Weakness: CWE-1287 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H