stoatchat before 0.15.5 contains an account enumeration vulnerability in the login endpoint that exposes source file locations in error responses. (CVE-2026-100677)
Stoatchat versions before 0.15.5 have an account enumeration vulnerability in the login endpoint. This flaw allows unauthenticated attackers to differentiate between registered and unregistered email addresses by analyzing error responses that expose source file locations. The vulnerability is identified as CVE-2026-100677 and has a medium severity rating with a CVSS score of 5.3.
AI Analysis
Technical Summary
Stoatchat before version 0.15.5 contains an account enumeration vulnerability in its login endpoint. Specifically, error responses from POST /api/auth/session/login requests reveal source file locations, enabling unauthenticated attackers to distinguish whether an email address is registered by comparing error location fields. This information disclosure is classified under CWE-209 (Information Exposure Through an Error Message).
Potential Impact
The vulnerability allows attackers to confirm the existence of user accounts by observing differences in error messages, which can aid in targeted attacks such as phishing or brute force attempts. The confidentiality impact is limited to information disclosure of account existence and source file locations. There is no impact on integrity or availability.
Mitigation Recommendations
A fix is available in stoatchat version 0.15.5 and later. Users should upgrade to version 0.15.5 or newer to remediate this vulnerability. No additional mitigation guidance is provided or required beyond applying the official update.
stoatchat before 0.15.5 contains an account enumeration vulnerability in the login endpoint that exposes source file locations in error responses. (CVE-2026-100677)
Description
Stoatchat versions before 0.15.5 have an account enumeration vulnerability in the login endpoint. This flaw allows unauthenticated attackers to differentiate between registered and unregistered email addresses by analyzing error responses that expose source file locations. The vulnerability is identified as CVE-2026-100677 and has a medium severity rating with a CVSS score of 5.3.
CVSS v3.1
Score 5.3medium
Affected software
pkg:github/stoatchat/stoatchatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Stoatchat before version 0.15.5 contains an account enumeration vulnerability in its login endpoint. Specifically, error responses from POST /api/auth/session/login requests reveal source file locations, enabling unauthenticated attackers to distinguish whether an email address is registered by comparing error location fields. This information disclosure is classified under CWE-209 (Information Exposure Through an Error Message).
Potential Impact
The vulnerability allows attackers to confirm the existence of user accounts by observing differences in error messages, which can aid in targeted attacks such as phishing or brute force attempts. The confidentiality impact is limited to information disclosure of account existence and source file locations. There is no impact on integrity or availability.
Mitigation Recommendations
A fix is available in stoatchat version 0.15.5 and later. Users should upgrade to version 0.15.5 or newer to remediate this vulnerability. No additional mitigation guidance is provided or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-v7jg-f6q5-rwc7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100677"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6ab89bddf7a7c54106942038
Added to database: 09/27/2026, 04:30:21 UTC
Last enriched: 09/27/2026, 04:42:10 UTC
Last updated: 09/28/2026, 01:47:40 UTC
Views: 18
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