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CVE-2026-23990

The Flux Operator is a Kubernetes CRD controller that manages the lifecycle of CNCF Flux CD and the ControlPlane enterprise distribution. Starting in version 0.36.0 and prior to version 0.40.0, a privilege escalation vulnerability exists in the Flux Operator Web UI authentication code that allows an attacker to bypass Kubernetes RBAC impersonation and execute API requests with the operator's service account privileges. In order to be vulnerable, cluster admins must configure the Flux Operator wi
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a99784680d786f6c724761ef4b8acb0001d278bd9bde0bc21f75422ab25285f1
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-269","description":"CWE-269: Improper Privilege Management","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"flux-operator","vendor":"controlplaneio-fluxcd","versions":[{"status":"affected","version":">= 0.36.0, < 0.40.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-269","description":"CWE-269: Improper Privilege Management","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/controlplaneio-fluxcd/flux-operator/commit/084540424f6de8ba5d88fb1fd1e8472ba29afd7e","tags":["x_refsource_MISC"],"url":"https://github.com/controlplaneio-fluxcd/flux-operator/commit/084540424f6de8ba5d88fb1fd1e8472ba29afd7e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/references/2
{"name":"https://github.com/controlplaneio-fluxcd/flux-operator/pull/610","tags":["x_refsource_MISC"],"url":"https://github.com/controlplaneio-fluxcd/flux-operator/pull/610"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/references/1
{"name":"https://github.com/controlplaneio-fluxcd/flux-operator/releases/tag/v0.40.0","tags":["x_refsource_MISC"],"url":"https://github.com/controlplaneio-fluxcd/flux-operator/releases/tag/v0.40.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/references/3
{"name":"https://github.com/controlplaneio-fluxcd/flux-operator/security/advisories/GHSA-4xh5-jcj2-ch8q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/controlplaneio-fluxcd/flux-operator/security/advisories/GHSA-4xh5-jcj2-ch8q"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e267da6bc27f478e59f11ccf54ccae0352fbc1ef289e6e09f2d0a1402a72df8 · sha256:e0d30ff3603937a4… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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