CVE-2026-100677 PUBLISHED

stoatchat before 0.15.5 Account Enumeration via Error Location

Assigner: VulnCheck
Reserved: 26.09.2026 Published: 26.09.2026 Updated: 26.09.2026

stoatchat before 0.15.5 contains an account enumeration vulnerability in the login endpoint that exposes source file locations in error responses. Unauthenticated attackers can distinguish between registered and unregistered email addresses by comparing error location fields returned from POST /api/auth/session/login requests.

CVSS Vector: 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
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 5.3

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

CVSS 3.1

Product Status

Vendor	stoatchat
Product	stoatchat
Versions	Default: unaffected affected from 0 to 0.15.5 (excl.) Version 0.15.5 is unaffected

CVE-2026-100677 PUBLISHED

stoatchat before 0.15.5 Account Enumeration via Error Location

Metrics

Product Status

Credits

References

Problem Types