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.
CVE-2026-55226
MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.4
- EG Score
- 5.4(medium)
- EG Risk
- 24(Track)EG Risk 24/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity54% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 8%
- KEV
- Not listed
Published
June 18, 2026
Last Modified
September 16, 2026
Advisory Details (6)
Auto-updated Sep 15, 2026Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available
1.1.0
Patch available: strimzi/strimzi-kafka-operator 1.1.0
https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0github_release Patch Available
1.0.1
Patch available: strimzi/strimzi-kafka-operator 1.0.1
https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1github_commit
commit f6c5207ba7ec (strimzi/strimzi-kafka-operator)
Fix landed in strimzi/strimzi-kafka-operator commit f6c5207ba7ec — awaiting tagged release
https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261github_commit
commit b3bfeffcc307 (strimzi/strimzi-kafka-operator)
Fix landed in strimzi/strimzi-kafka-operator commit b3bfeffcc307 — awaiting tagged release
https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440dgithub_pr
Added enable flag for topic and user operators watched namespace
Fix merged in strimzi/strimzi-kafka-operator PR #12844 on 2026-06-18 — awaiting tagged release
https://github.com/strimzi/strimzi-kafka-operator/pull/12844github Patch Available
Unrestricted access to all Secrets within namespace watched by the Topic operator · Advisory · strimzi/strimzi-kafka-operator · GitHub
https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3mVendor Advisories for CVE-2026-55226(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| io.strimzi:strimzi | 0.10.0 ... 1.0.0-RC2 (81 versions) | 1.0.1 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-17 19:31 UTCEPSS rescore
- 2026-09-16 17:13 UTCEG score recompute
- 2026-09-16 15:33 UTCEG score recompute
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-15 18:37 UTCEG score recompute
- 2026-07-31 06:29 UTCEG score recompute
- 2026-07-26 18:49 UTCEG score recompute
- 2026-07-23 03:20 UTCEG score recompute
- 2026-06-18 13:08 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-55226?
CVE-2026-55226 is a medium vulnerability published on June 18, 2026. 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…
When was CVE-2026-55226 disclosed?
CVE-2026-55226 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55226 actively exploited?
CVE-2026-55226 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.8% of all scored CVEs.
What is the CVSS score of CVE-2026-55226?
CVE-2026-55226 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-55226?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55226, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-55226
Is Your Infrastructure Affected by CVE-2026-55226?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.