---
title: "CVE-2026-104456: YesWiki - SQL Injection"
description: "YesWiki < 4.6.7 contains a second-order SQL injection caused by unescaped stored username concatenated into a read-ACL LIKE clause in AclService::updateRequestWithACL, letting attackers bypass read ACLs and read database contents, exploit requires attacker to self-register an account with crafted username."
url: https://panop.io/threat-heartbeat/CVE-2026-104456/
---

# CVE-2026-104456 YesWiki - SQL Injection

YesWiki < 4.6.7 contains a second-order SQL injection caused by unescaped stored username concatenated into a read-ACL LIKE clause in AclService::updateRequestWithACL, letting attackers bypass read ACLs and read database contents, exploit requires attacker to self-register an account with crafted username.

CVSS base score 7.6 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.30% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104456)

## Details

Type

SQL Injection

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Published

2 October 2026

Updated

15 October 2026

Weakness

[CWE-89](https://cwe.mitre.org/data/definitions/89.html)

## Vendor fix

Update to version 4.6.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104456](https://nvd.nist.gov/vuln/detail/CVE-2026-104456)
- [https://github.com/YesWiki/yeswiki/security/advisories/GHSA-6rw5-62xf-q5xp](https://github.com/YesWiki/yeswiki/security/advisories/GHSA-6rw5-62xf-q5xp)
- [https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-second-order-sql-injection-via-acl-username](https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-second-order-sql-injection-via-acl-username)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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