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% (14th percentile of EPSS-scored CVEs). 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: 0.3%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

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 computed
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
15th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 18, 2026

Last Modified

September 30, 2026

Advisory Details (6)

Auto-updated Sep 15, 2026
Patch 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/1.1.0
github_release Patch Available

1.0.1

Patch available: strimzi/strimzi-kafka-operator 1.0.1

https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1
github_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/f6c5207ba7ec89b46ce6720b8638d647e556a261
github_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/b3bfeffcc30754c3e62e6f4afd8a76942cac440d
github_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/12844
githubMentions a patch (unverified)

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-wv3m

Vendor 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)
PackageVulnerable rangeFix by version rangeDependents
io.strimzi:strimzi0.10.0 ... 1.0.0-RC2 (81 versions)
  • every version up to 1.0.1: fixed in 1.0.1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 25× 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.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-09-30 17:55 UTCEG score recompute
  12. 2026-09-30 15:03 UTCEPSS rescore
  13. 2026-09-29 15:22 UTCEPSS rescore
  14. 2026-09-28 13:51 UTCEPSS rescore
  15. 2026-09-27 13:48 UTCEPSS rescore
  16. 2026-09-26 15:59 UTCEPSS rescore
  17. 2026-09-24 14:04 UTCEPSS rescore
  18. 2026-09-23 17:54 UTCEPSS rescore
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-17 19:31 UTCEPSS rescore
  22. 2026-09-16 17:13 UTCEG score recompute
  23. 2026-09-16 15:33 UTCEG score recompute
  24. 2026-09-16 14:08 UTCEPSS rescore
  25. 2026-09-15 18:37 UTCEG score recompute
Show 4 more
  1. 2026-07-31 06:29 UTCEG score recompute
  2. 2026-07-26 18:49 UTCEG score recompute
  3. 2026-07-23 03:20 UTCEG score recompute
  4. 2026-06-18 13:08 UTCEG score recompute

Related CVEs(same product + same CWE)

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 on June 18, 2026, with the most recent update on September 30, 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 0.3% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55226?
CVE-2026-55226 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55226?
A fix for CVE-2026-55226 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55226 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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