Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck
CVE-2026-104439YesWiki before 4.6.7 User Enumeration via Lost-Password Flow
Medium 5.3
In plain English
A medium-severity security flaw in yeswiki from YesWiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 72.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
YesWiki before 4.6.7 contains a user enumeration vulnerability in LostPasswordAction.php that allows unauthenticated attackers to confirm registered email addresses through differing responses. Attackers can submit emails to the MotDePassePerdu recovery page without rate limiting to identify valid accounts for targeted phishing or password-spraying.
Affected products (as reported)
Weakness: CWE-204 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-892r-45m6-45xc) vendor-advisory
- VulnCheck Advisory: YesWiki before 4.6.7 User Enumeration via Lost-Password Flow third-party-advisory