---
id: CVE-2026-110225
title: >-
  Shaarli through 0.16.9 contains a server-side request forgery vulnerability
  that allows authenticated users to make the server request internal addresses
  by fetching bookmark thumbnails without private-address checks
summary: >-
  Shaarli through 0.16.9 contains a server-side request forgery vulnerability
  that allows authenticated users to make the server request internal addresses
  by fetching bookmark thumbnails without private-address checks. Attackers can
  creat…
severity: low
cvss: 2.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-918
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T19:18:47.340'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110225'
references:
  - url: 'https://github.com/shaarli/Shaarli'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/shaarli/Shaarli/blob/bfeadb4e5856702c05279bb2a5c405f2ed802015/application/Thumbnailer.php#L82-L98
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/shaarli/Shaarli/blob/bfeadb4e5856702c05279bb2a5c405f2ed802015/application/front/controller/admin/ThumbnailsController.php#L46-L64
    label: disclosure@vulncheck.com
  - url: >-
      https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/shaarli-open-mode-thumbnail-fetch-ssrf
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/shaarli-through-0.16.9-ssrf-via-thumbnail-retrieval-update-thumbnail-route
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-13T19:43:28.940Z'
---

## Overview

Shaarli through 0.16.9 contains a server-side request forgery vulnerability that allows authenticated users to make the server request internal addresses by fetching bookmark thumbnails without private-address checks. Attackers can create bookmarks pointing to loopback, private, or cloud metadata addresses and trigger ThumbnailsController::ajaxUpdate or saving to send blind GET requests, with open_shaarli exposing this to any visitor.

## Remediation

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