# CVE-2026-100362: SuiteCRM: V8 OAuth2 Username Enumeration

Status: published. Published: 2026-11-05. Updated: 2026-11-09.

SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to 7.15.2 and 8.10.2, the /legacy/Api/V8/OAuth2 password-grant endpoint returns distinct error messages for an invalid username and an invalid password. An unauthenticated remote attacker can use those response differences to enumerate valid CRM usernames and target confirmed accounts with password spraying, credential stuffing, brute-force, or social-engineering attacks. This issue is fixed in versions 7.15.2 and 8.10.2.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- SuiteCRM / SuiteCRM: < 7.15.2 (affected); >= 8.0.0, < 8.10.2 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: GitHub_M

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.44% as of 2026-11-09; percentile 38.57%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-204

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/SuiteCRM/SuiteCRM/security/advisories/GHSA-rc46-hjjp-4jv5 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/SuiteCRM/SuiteCRM-Core/commit/a11f50180d939f639cc468b5d536e8ad714dfb68 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/SuiteCRM/SuiteCRM/commit/d6bca97a0159ec019a969b86eca32affab3beb7c (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/SuiteCRM/SuiteCRM-Core/releases/tag/v8.10.2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/SuiteCRM/SuiteCRM/releases/tag/v7.15.2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/SuiteCRM/SuiteCRM-Core/commit/a11f50180d939f639cc468b5d536e8ad714dfb68 (security-advisories@github.com)

- https://github.com/SuiteCRM/SuiteCRM-Core/releases/tag/v8.10.2 (security-advisories@github.com)

- https://github.com/SuiteCRM/SuiteCRM/commit/d6bca97a0159ec019a969b86eca32affab3beb7c (security-advisories@github.com)

- https://github.com/SuiteCRM/SuiteCRM/releases/tag/v7.15.2 (security-advisories@github.com)

- https://github.com/SuiteCRM/SuiteCRM/security/advisories/GHSA-rc46-hjjp-4jv5 (security-advisories@github.com)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-100362; retrieved 2026-11-09; source updated 2026-11-09

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100362; retrieved 2026-11-06; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-100362; retrieved 2026-11-09; source updated Not reported

Revision: 59610eb91f353c72863be3622ebe4b18075873639a88fe178bd6abcc861372be

Canonical: https://y2.dev/cve/CVE-2026-100362

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