What is CVE-2026-104456?

CVE-2026-104456 is a high-severity vulnerability in Yeswiki, classified under SQL Injection. CVSS score: 7.6/10. Published 2026-10-02.

How severe is CVE-2026-104456?

High severity. CVSS v3 base score is 7.6 out of 10.

SQL Injection in Yeswiki

CVE-2026-104456

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.

Vulnerability class: SQL Injection

Published 2026-10-02 · last modified 2026-10-02.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Yeswiki

Weakness classification (CWE)

CWE-89 — SQL Injection

References

github.com/YesWiki/yeswiki/security/advisories/GHSA-6rw5-62xf-q5xp (vendor-advisory)
www.vulncheck.com/advisories/yeswiki-before-4.6.7-second-order-sql-injection-vi… (third-party-advisory)

Frequently asked questions

What is CVE-2026-104456?: CVE-2026-104456 is a high-severity vulnerability in Yeswiki, classified under SQL Injection. CVSS score: 7.6/10. Published 2026-10-02.
How severe is CVE-2026-104456?: High severity. CVSS v3 base score is 7.6 out of 10.