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VulnerabilityPublished

CVE-2026-88808: SUSE Rancher · Execution with Unnecessary Privileges

Affects SUSE RancherSource CVE Database V5

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Not known to be exploited · CVSS 8.8 High · fixed in 0.16.2 : patch SUSE Rancher soon.

Data as of 13 Nov 2026, 23:54 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.16.2, 0.15.7, 0.14.11
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 Rancher and Fleet to 0.16.2, 0.15.7 or 0.14.11.

Affected software

ProductAffectedFixed in
SUSERancherAffected
  • >=0.16.0 <0.16.2
Fixed in
  • 0.16.2
SUSERancherAffected
  • >=0.15.0 <0.15.7
Fixed in
  • 0.15.7
SUSERancherAffected
  • >=0.14.0 <0.14.11
Fixed in
  • 0.14.11
GitHubFleetpkg:github/FleetOther threatsAffected
  • >=0.16.0 <0.16.2
  • >=0.15.0 <0.15.7
  • >=0.14.0 <0.14.11
Fixed in
  • 0.16.2
  • 0.15.7
  • 0.14.11

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

AI-suggested

Upgrade to SUSE Rancher Fleet versions 0.14.11 or later, 0.15.7 or later, and 0.16.2 or later where this issue has been fixed. Since this is a software vulnerability with available fixed versions, applying the official patches is the recommended remediation.

Description

CVE-2026-88808 is a high-severity vulnerability in SUSE Rancher Fleet where the Fleet agent improperly uses cluster-admin credentials instead of the intended ServiceAccount credentials when writing resources to downstream clusters. This affects multi-tenant environments sharing downstream clusters, potentially allowing unauthorized overwriting of configuration files. The issue impacts SUSE Rancher Fleet versions 0.14 before 0.14.11, 0.15 before 0.15.7, and 0.16 before 0.16.2.

References

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