CVE-2026-24476: Shaarli vulnerable to stored XSS via Suggested Tags

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-26 · updated 2026-06-17
Weakness: CWE-79

Description

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.

Affected products

Shaarli: before 0.16.0 — fixed in 0.16.0

How to fix

Upgrade to a fixed version: Shaarli 0.16.0. Check the vendor advisory for mitigations.

References

https://github.com/shaarli/Shaarli/commit/b854c789289c4b0dfbb7c1e5793bae7d8f94e063
https://github.com/shaarli/Shaarli/security/advisories/GHSA-g3xq-mj52-f8pg

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