---
id: CVE-2026-109169
title: >-
  LogicalDOC Community Edition through 9.3 contains a sql injection
  vulnerability that allows authenticated users to execute crafted SQL via the
  firstLetter parameter of TagsDataServlet
summary: >-
  LogicalDOC Community Edition through 9.3 contains a sql injection
  vulnerability that allows authenticated users to execute crafted SQL via the
  firstLetter parameter of TagsDataServlet. Low-privileged attackers can inject
  UNION SELECT sta…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-89
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T14:17:10.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109169'
references:
  - url: 'https://github.com/logicaldoc/community'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/logicaldoc/community/blob/9.3/logicaldoc-core/src/main/java/com/logicaldoc/core/document/HibernateDocumentDAO.java#L691
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/logicaldoc/community/blob/9.3/logicaldoc-webapp/src/main/java/com/logicaldoc/web/data/TagsDataServlet.java#L41
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/logicaldoc/community/commit/8428bfb93f89ab5773019299d17d643c075c4aee
    label: disclosure@vulncheck.com
  - url: 'https://github.com/logicaldoc/community/discussions/119'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/logicaldoc-community-edition-through-9.3-sql-injection-via-tags-xml-firstletter
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T14:50:34.118Z'
---

## Overview

LogicalDOC Community Edition through 9.3 contains a sql injection vulnerability that allows authenticated users to execute crafted SQL via the firstLetter parameter of TagsDataServlet. Low-privileged attackers can inject UNION SELECT statements returned in the XML tag list to read usernames, email addresses and password hashes from ld_user.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.