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CVE-2026-56215

Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e675b269b242a22e209ab3dd1df3e0eeeedfc8feea7c9023b59268f2a76654c3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HI…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Capgo","vendor":"Capgo","versions":[{"lessThan":"12.128.12","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"12.128.12","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HI…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-639","description":"Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["exploit"],"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/adp/0/references/0
{"name":"GHSA Advisory GHSA-wqc6-fhwf-qpww","tags":["vendor-advisory"],"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/references/0
{"name":"VulnCheck Advisory: Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/capgo-account-merge-via-poisoned-public-users-email-in-sso-provisioning"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9d0588b926b72ec01ed4188c27192ec5a217a80a65731289b1f44ea12dad359c · sha256:2a1f6ed417c1e0be… · /containers/cna/references/1

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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