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VulnerabilityPublished

CVE-2026-93538: SUSE Rancher · Authentication Bypass by Spoofing

Affects SUSE RancherSource CVE Database V5

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Not known to be exploited · CVSS 7.1 High · fixed in 0.16.1 : patch SUSE Rancher soon.

Data as of 12 Nov 2026, 23:25 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.16.1, 0.15.6, 0.14.10 +2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
SUSERancherAffected
  • >=0.16.0 <0.16.1
Fixed in
  • 0.16.1
SUSERancherAffected
  • >=0.15.0 <0.15.6
Fixed in
  • 0.15.6
SUSERancherAffected
  • >=0.14.0 <0.14.10
Fixed in
  • 0.14.10
SUSERancherAffected
  • >=0.13.0 <0.13.15
Fixed in
  • 0.13.15
SUSERancherAffected
  • >=0.12.0 <0.12.19
Fixed in
  • 0.12.19
GitHubFleetpkg:github/FleetOther threatsAffected
  • >=0.16.0 <0.16.1
  • >=0.15.0 <0.15.6
  • >=0.14.0 <0.14.10
  • >=0.13.0 <0.13.15
  • >=0.12.0 <0.12.19
Fixed in
  • 0.16.1
  • 0.15.6
  • 0.14.10
  • 0.13.15
  • 0.12.19

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in SUSE Rancher Fleet versions 0.16.1, 0.15.6, 0.14.10, 0.13.15, and 0.12.19. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.

Description

A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated cluster registration, cluster labels supplied by the registering agent, including labels in the reserved management.cattle.io/ namespace such as the cluster display name label, were applied to the resulting upstream Cluster object. Because Fleet resolves GitRepo and Bundle targets from those cluster labels, a party able to register a cluster into a Fleet workspace namespace shared with other tenants could cause its own cluster to satisfy targeting rules that administrators intended for a different cluster. This affects SUSE Rancher Fleet 0.16 before 0.16.1, 0.15 before 0.15.6, 0.14 before 0.14.10, 0.13 before 0.13.15, 0.12 before 0.12.19 and older versions.

References

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