YesWiki before 4.6.7 contains a user enumeration vulnerability in LostPasswordAction.php that allows unauthenticated attackers to confirm registered… (CVE-2026-104439)
YesWiki versions prior to 4.6.7 have a user enumeration vulnerability in the LostPasswordAction.php component. This flaw allows unauthenticated attackers to confirm whether an email address is registered by observing different responses from the password recovery page. There is no rate limiting on submissions, enabling attackers to automate identification of valid accounts. This can facilitate targeted phishing or password spraying attacks.
AI Analysis
Technical Summary
The vulnerability in YesWiki before version 4.6.7 exists in LostPasswordAction.php, where the password recovery functionality reveals whether an email address is registered based on differing responses to unauthenticated requests. Attackers can exploit this lack of response uniformity and absence of rate limiting to enumerate valid user accounts. This information disclosure vulnerability is classified under CWE-204 (Information Exposure Through Discrepancy).
Potential Impact
The vulnerability allows attackers to confirm valid email addresses registered in the system without authentication. This can lead to targeted phishing campaigns or password spraying attacks against identified accounts. The confidentiality of user registration information is impacted, but there is no direct impact on integrity or availability.
Mitigation Recommendations
A fixed version, 4.6.7, is available that addresses this vulnerability. Users should upgrade to YesWiki 4.6.7 or later to remediate this issue. Until upgrading, implementing rate limiting on the password recovery page and ensuring uniform responses regardless of email validity can help mitigate exploitation.
YesWiki before 4.6.7 contains a user enumeration vulnerability in LostPasswordAction.php that allows unauthenticated attackers to confirm registered… (CVE-2026-104439)
Description
YesWiki versions prior to 4.6.7 have a user enumeration vulnerability in the LostPasswordAction.php component. This flaw allows unauthenticated attackers to confirm whether an email address is registered by observing different responses from the password recovery page. There is no rate limiting on submissions, enabling attackers to automate identification of valid accounts. This can facilitate targeted phishing or password spraying attacks.
CVSS v3.1
Score 5.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in YesWiki before version 4.6.7 exists in LostPasswordAction.php, where the password recovery functionality reveals whether an email address is registered based on differing responses to unauthenticated requests. Attackers can exploit this lack of response uniformity and absence of rate limiting to enumerate valid user accounts. This information disclosure vulnerability is classified under CWE-204 (Information Exposure Through Discrepancy).
Potential Impact
The vulnerability allows attackers to confirm valid email addresses registered in the system without authentication. This can lead to targeted phishing campaigns or password spraying attacks against identified accounts. The confidentiality of user registration information is impacted, but there is no direct impact on integrity or availability.
Mitigation Recommendations
A fixed version, 4.6.7, is available that addresses this vulnerability. Users should upgrade to YesWiki 4.6.7 or later to remediate this issue. Until upgrading, implementing rate limiting on the password recovery page and ensuring uniform responses regardless of email validity can help mitigate exploitation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q8mj-q84p-cx6f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104439"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6abfee90a43b0b3b89e55043
Added to database: 10/02/2026, 17:49:04 UTC
Last enriched: 10/02/2026, 17:59:17 UTC
Last updated: 10/02/2026, 21:26:00 UTC
Views: 3
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