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CVE-2026-67331

better-auth SCIM versions from 1.5.0 before 1.7.0-beta.4 fail to bind non-organization SCIM providers to their creator by default, allowing authenticated users to manage other users' providers. Attackers can regenerate SCIM bearer tokens, invalidate legitimate tokens, and authenticate to SCIM API routes with the attacker-controlled token.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ada7a61ed37f8b7b7bd820aeea406dfefe2043c77afb6a49c949b834b8ce9b18
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","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","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":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/metrics/0/cvssV4_0

{"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:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/better-auth/scim","product":"scim","vendor":"better-auth","versions":[{"lessThan":"1.7.0-beta.4","status":"affected","version":"1.5.0","versionType":"semver"},{"status":"unaffected","version":"1.7.0-beta.4","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","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":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/metrics/0/cvssV4_0
{"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:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/metrics/1/cvssV3_1

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:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"GitHub Security Advisory (GHSA-j8v8-g9cx-5qf4)","tags":["vendor-advisory"],"url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-j8v8-g9cx-5qf4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-j8v8-g9cx-5qf4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /containers/adp/0/references/0
{"name":"VulnCheck Advisory: better-auth SCIM 1.5.0 before 1.7.0-beta.4 Authorization Bypass","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/better-auth-scim-before-beta-4-authorization-bypass"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0354c1bad377e2486196f48c8b1dfe14f4cc61567d33a0a5f3b8465e5c7283f6 · sha256:934e7eb8cf449a8c… · /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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