Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck
CVE-2026-104456YesWiki before 4.6.7 Second-Order SQL Injection via ACL Username
High 7.6
In plain English
A high-severity SQL injection 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 23% of all known vulnerabilities).
Severity (CVSS 3.1)7.6High
Exploit odds (30 days)0.3%top 77.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
YesWiki before 4.6.7 contains a second-order SQL injection vulnerability in AclService::updateRequestWithACL, where a stored username is concatenated unescaped into a read-ACL LIKE clause. Attackers can self-register an account name containing a double-quote payload, then load non-admin ACL-filtered listings to read database contents and bypass read ACLs.
Affected products (as reported)
Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
References
- GitHub Security Advisory (GHSA-6rw5-62xf-q5xp) vendor-advisory
- VulnCheck Advisory: YesWiki before 4.6.7 Second-Order SQL Injection via ACL Username third-party-advisory