Reflected XSS vulnerability in Shaarli v0.9.1 allows an unauthenticated attacker to inject JavaScript via the searchtags parameter to index.php. If the victim is an administrator, an attacker can (for example) take over the admin session or change global settings or add/delete links. It is also possible to execute JavaScript against unauthenticated users.
Severity
CVSS 3.0
6.1 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)