Cross-site scripting in Shaarli - CVE-2026-48822
Published: May 25, 2026
Vulnerability identifier: #VU132255
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-48822
CWE-ID: CWE-79
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to execute arbitrary script in the victim's browser.
The vulnerability exists due to cross-site scripting in the Bookmark Description markdown-to-html conversion process when processing markdown reference-style links. A local privileged user can inject a malicious javascript: URI in a crafted bookmark description to execute arbitrary script in the victim's browser.
User interaction is required to click the rendered link on the homepage.
Affected software
Shaarli
How to mitigate CVE-2026-48822
Install security update from vendor's website.
Shaarli - update to 0.16.2