Chatwoot: Pre-Account Takeover via OAuth on Unconfirmed Accounts

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Summary

CVECVE-2026-44707
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-26 18:16:50 UTC
Updated2026-05-26 19:37:00 UTC
DescriptionChatwoot is a customer engagement suite. From 2.14.0 to before 4.13.0, a Pre-Account Takeover (Pre-ATO) vulnerability existed in Chatwoot's authentication flow. Because email confirmation was not enforced before an account became usable, an attacker could pre-register an email address they did not own and set a password. If the legitimate owner of that email later signed in to Chatwoot using Google OAuth (or another OmniAuth provider), the OAuth flow silently confirmed the existing account without invalidating the attacker's pre-set credentials. The attacker could then continue to log in with the password they had originally chosen and access any data the victim subsequently entered into the dashboard, including PII, API keys, and other sensitive information. This vulnerability is fixed in 4.13.0.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS: 0.000400000 probability, percentile 0.123750000 (date 2026-05-27)

Problem Types: CWE-283 | CWE-287 | CWE-283 CWE-283: Unverified Ownership | CWE-287 CWE-287: Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
3.1CNADECLARED6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Chatwoot Chatwoot affected >= 2.14.0, < 4.13.0 Not specified

References

ReferenceSourceLinkTags
github.com/chatwoot/chatwoot/security/advisories/GHSA-8qxm-4p4p-cfhm [email protected] github.com
github.com/chatwoot/chatwoot/commit/211fb1102dd208daee414cff1b8d71ea27ac... [email protected] github.com
github.com/chatwoot/chatwoot/pull/13878 [email protected] github.com
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