Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-56666

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's external identity provider handler checks that the local user's email is verified but does not verify that the external IdP confirmed ownership of the same email before auto-linking by email, allowing a permissive provider account with a victim email address to be linked to the victim's local account. This issue is fixed in version 4.15.3.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5944c4c4987a8c57edf60cb664cc6c44a2e910e65afad73f6d263c08a76c52f7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"zitadel","vendor":"zitadel","versions":[{"status":"affected","version":"< 4.15.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dbb4b02584b798a8bd5b2c9a892402bacdacd698fa81115a0770998112c50f2a · sha256:1387714e1a46b655… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dbb4b02584b798a8bd5b2c9a892402bacdacd698fa81115a0770998112c50f2a · sha256:1387714e1a46b655… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dbb4b02584b798a8bd5b2c9a892402bacdacd698fa81115a0770998112c50f2a · sha256:1387714e1a46b655… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/zitadel/zitadel/commit/c97012f0c5dc2fe960ae6e940cbea23229f0557f","tags":["x_refsource_MISC"],"url":"https://github.com/zitadel/zitadel/commit/c97012f0c5dc2fe960ae6e940cbea23229f0557f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dbb4b02584b798a8bd5b2c9a892402bacdacd698fa81115a0770998112c50f2a · sha256:1387714e1a46b655… · /containers/cna/references/1
{"name":"https://github.com/zitadel/zitadel/releases/tag/v4.15.3","tags":["x_refsource_MISC"],"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dbb4b02584b798a8bd5b2c9a892402bacdacd698fa81115a0770998112c50f2a · sha256:1387714e1a46b655… · /containers/cna/references/2
{"name":"https://github.com/zitadel/zitadel/security/advisories/GHSA-992q-9gwp-7r79","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-992q-9gwp-7r79"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dbb4b02584b798a8bd5b2c9a892402bacdacd698fa81115a0770998112c50f2a · sha256:1387714e1a46b655… · /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.

← Back to CVE Explorer