CVE-2026-55998 | BDVDB-2026-355481 Detail

SUSERancher

Description#

The endpoint /v3/import/{token}_{clusterId}.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/private_registry.go causes the request to return HTTP 502 Bad Gateway. For cluster IDs that do not exist, the endpoint returns HTTP 200. This observable difference in response codes constitutes a reliable enumeration oracle.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-204 Observable response discrepancy

References#

Exploit#

No public exploit known

History#

Version 12026-08-05Record published in the CVE List.

Published

Published: 2026-08-05
Last modified: 2026-08-05

Vendor information

Vendor: SUSE
Product: Rancher

All SUSE vulnerabilities

Score

5.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 28.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 2.14.0 and < 2.14.4
Fixed
2.14.4
Vulnerable
>= 2.13.0 and < 2.13.8
Fixed
2.13.8
Vulnerable
>= 2.12.0 and < 2.12.12
Fixed
2.12.12
Vulnerable
>= 2.11.0 and < 2.11.16
Fixed
2.11.16

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.3 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).