CVE-2026-55226 (GCVE-0-2026-55226)
Vulnerability from cvelistv5 – Published: 2026-09-15 17:14 – Updated: 2026-09-15 17:14
VLAI
EPSS
VEX
Title
Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator
Summary
Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, deploying only the Topic Operator or only the User Operator through the Kafka custom resource leaves the Entity Operator ServiceAccount with RBAC permissions for both components. The excess permissions can allow access to KafkaUser custom resources and Secrets when the User Operator is absent, or access to KafkaTopic custom resources when the Topic Operator is absent. This issue is fixed in versions 1.0.1 and 1.1.0.
Severity
5.4 (Medium)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/strimzi/strimzi-kafka-operator… | x_refsource_CONFIRM |
| https://github.com/strimzi/strimzi-kafka-operator… | x_refsource_MISC |
| https://github.com/strimzi/strimzi-kafka-operator… | x_refsource_MISC |
| https://github.com/strimzi/strimzi-kafka-operator… | x_refsource_MISC |
| https://github.com/strimzi/strimzi-kafka-operator… | x_refsource_MISC |
| https://github.com/strimzi/strimzi-kafka-operator… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| strimzi | strimzi-kafka-operator |
Affected:
< 1.0.1
|
guessed |
{
"containers": {
"cna": {
"affected": [
{
"product": "strimzi-kafka-operator",
"vendor": "strimzi",
"versions": [
{
"status": "affected",
"version": "\u003c 1.0.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, deploying only the Topic Operator or only the User Operator through the Kafka custom resource leaves the Entity Operator ServiceAccount with RBAC permissions for both components. The excess permissions can allow access to KafkaUser custom resources and Secrets when the User Operator is absent, or access to KafkaTopic custom resources when the Topic Operator is absent. This issue is fixed in versions 1.0.1 and 1.1.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "CWE-269: Improper Privilege Management",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-272",
"description": "CWE-272: Least Privilege Violation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T17:14:21.491Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m"
},
{
"name": "https://github.com/strimzi/strimzi-kafka-operator/pull/12844",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strimzi/strimzi-kafka-operator/pull/12844"
},
{
"name": "https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d"
},
{
"name": "https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261"
},
{
"name": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1"
},
{
"name": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0"
}
],
"source": {
"advisory": "GHSA-r427-j2h7-wv3m",
"discovery": "UNKNOWN"
},
"title": "Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-55226",
"datePublished": "2026-09-15T17:14:21.491Z",
"dateReserved": "2026-06-16T16:16:32.628Z",
"dateUpdated": "2026-09-15T17:14:21.491Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-55226\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-15T18:17:23.807\",\"lastModified\":\"2026-09-15T18:17:23.807\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, deploying only the Topic Operator or only the User Operator through the Kafka custom resource leaves the Entity Operator ServiceAccount with RBAC permissions for both components. The excess permissions can allow access to KafkaUser custom resources and Secrets when the User Operator is absent, or access to KafkaTopic custom resources when the Topic Operator is absent. This issue is fixed in versions 1.0.1 and 1.1.0.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"strimzi\",\"product\":\"strimzi-kafka-operator\",\"versions\":[{\"version\":\"\u003c 1.0.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-269\"},{\"lang\":\"en\",\"value\":\"CWE-272\"}]}],\"references\":[{\"url\":\"https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/strimzi/strimzi-kafka-operator/pull/12844\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m\",\"source\":\"security-advisories@github.com\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-15T18:09:03+00:00",
"cve": "CVE-2026-55226",
"id": "CVE-2026-55226",
"initial_release_date": "2026-06-17T00:00:00+00:00",
"product_status:known_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "strimzi-cluster-operator: Unrestricted access to all Secrets within namespace watched by the Topic operator in Strimzi",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55226.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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