Low severity · published Oct 13, 2026
CVE-2026-110225
Shaarli through 0.16.9 SSRF via Thumbnail Retrieval update-thumbnail Route
2.7
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SH
Shaarli · shaarli
through 0.16.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110225
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110225
third-party-advisory
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/shaarli-open-mode-thumbnail-fetch-ssrf
technical-description
https://github.com/shaarli/Shaarli/blob/bfeadb4e5856702c05279bb2a5c405f2ed802015/application/front/controller/admin/ThumbnailsController.php#L46-L64
technical-description
https://github.com/shaarli/Shaarli/blob/bfeadb4e5856702c05279bb2a5c405f2ed802015/application/Thumbnailer.php#L82-L98
product
https://github.com/shaarli/Shaarli
third-party-advisory
https://www.vulncheck.com/advisories/shaarli-through-0.16.9-ssrf-via-thumbnail-retrieval-update-thumbnail-route
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