CVE-2026-24476
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
4Description
Shaarli is a personal bookmarking service. Prior to version 0.16.0, crafting a malicious tag which starting with `"` prematurely ends the `<input>` tag on the start page and allows an attacker to add arbitrary html leading to a possible XSS attack. Version 0.16.0 fixes the issue.
Analysis
Stored XSS in Shaarli versions before 0.16.0 allows authenticated attackers to inject malicious HTML by crafting tags starting with a double quote character, which breaks out of input tag validation on the homepage. An attacker with login credentials can exploit this to execute arbitrary JavaScript in victims' browsers with the victim's interaction. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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