Description
Shaarli is a personal bookmarking service. Versions prior to 0.16.3 are vulnerable to stored XSS in `application/front/controller/visitor/BookmarkListController.php`. The `permalink` handler concatenates the raw `$bookmark->getTitle()` into the `pagetitle` template variable and the RainTPL template emits it into the document `
` element without HTML escaping. A bookmark title containing `` closes the document title early and the injected script executes in the Shaarli origin for any visitor of `/shaare/{hash}`. Shaarli's metadata fetcher copies a remote page's `
` text verbatim into the local bookmark title, so an attacker who hosts an attacker-controlled URL and convinces an administrator to bookmark it plants the payload with no further interaction — and the resulting permalink fires for every visitor including the administrator on first save, providing a one-shot administrator account takeover. Version 0.16.3 fixes the issue.</p></div>
<div class="ds"><h2>Affected Platforms</h2><div><span class="ptag">Unknown</span></div></div>
<div class="ds"><h2>Weakness Type</h2><p>CWE-79</p></div>
<div class="ds"><h2>References</h2><ul style="list-style:none;display:flex;flex-direction:column;gap:0.4rem;"><li><a href="https://github.com/shaarli/Shaarli/security/advisories/GHSA-xm98-h5jj-64xv" target="_blank" rel="noopener">https://github.com/shaarli/Shaarli/security/advisories/GHSA-xm98-h5jj-64xv</a></li><li><a href="https://github.com/shaarli/Shaarli/security/advisories/GHSA-xm98-h5jj-64xv" target="_blank" rel="noopener">https://github.com/shaarli/Shaarli/security/advisories/GHSA-xm98-h5jj-64xv</a></li></ul></div>
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