Chatwoot: Pre-Account Takeover via OAuth on Unconfirmed Accounts
Published May 26, 2026
6.8
MEDIUMCVSS 3.1
EPSS 0.46%
Description
Chatwoot 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.
Affected products
-
- Version >= 2.14.0, < 4.13.0StatusaffectedConstraints-
- Version
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed May 27, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
May-Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.46% (0.00455) | 37.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00344) | 26.02th | v5 (v2026.06.15) |
| May 27, 2026 | 0.04% (0.00040) | 12.38th | v4 (v2025.03.14) |
References (3)
- https://github.com/chatwoot/chatwoot/commit/211fb1102dd208daee414cff1b8d71ea27ac5ebf x_refsource_MISC
- https://github.com/chatwoot/chatwoot/pull/13878 x_refsource_MISC
- https://github.com/chatwoot/chatwoot/security/advisories/GHSA-8qxm-4p4p-cfhm x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://github.com/chatwoot/chatwoot/commit/211fb1102dd208daee414cff1b8d71ea27ac5ebf | x_refsource_MISC | |
| https://github.com/chatwoot/chatwoot/pull/13878 | x_refsource_MISC | |
| https://github.com/chatwoot/chatwoot/security/advisories/GHSA-8qxm-4p4p-cfhm | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.