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CVE-2026-100677— stoatchat before 0.15.5 Account Enumeration via Error Location

Quick assessment

Affected
stoatchat stoatchat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

StoaChat 在 0.15.5 版本之前存在账户枚举漏洞。该漏洞位于登录接口，当发生错误时，会在响应中暴露源文件的位置信息。未认证的攻击者可以通过比较 POST /api/auth/session/login 请求返回的错误信息中的位置字段，来区分已注册和未注册的邮箱地址。

CVSS 5.3 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1087.001 · Local Account
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I. Basic Information for CVE-2026-100677

Vulnerability Information
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Vulnerability Title
stoatchat before 0.15.5 Account Enumeration via Error Location
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
stoatchat stoatchat 0 ~ 0.15.5 -

II. Public POCs for CVE-2026-100677

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III. Intelligence Information for CVE-2026-100677

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Vendor Advisories for CVE-2026-100677 (1)

Other References for CVE-2026-100677 (1)

Same Patch Batch · stoatchat · 2026-09-26 · 6 CVEs total

CVE-2026-100679 8.8 HIGH stoatchat before 0.15.5 MFA Bypass via Cross-Account Ticket
CVE-2026-100676 8.2 HIGH stoatchat before 0.15.5 Local Filesystem Read via SVG
CVE-2026-100678 6.5 MEDIUM stoatchat before 0.15.5 MFA Brute Force via Insufficient Rate Limiting
CVE-2026-100675 6.5 MEDIUM stoatchat before 0.15.5 Denial of Service via mass mentions
CVE-2026-100674 4.3 MEDIUM stoatchat before 0.15.5 Username Validation Bypass via Unicode Sanitization

IV. Related Vulnerabilities

Same product: stoatchat
Same vendor: stoatchat
Same weakness: CWE-209

V. Comments for CVE-2026-100677

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