CVE-2023-27489High· 7.6▾ TwilightKiwi TCMS Stored Cross-site Scripting via SVG file
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.8 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.5%
Last analysed / modified upstream
Kiwi TCMS accepts SVG files uploaded by users which could potentially contain JavaScript code. If SVG images are viewed directly, i.e. not rendered in an HTML page, this JavaScript code could execute.
This vulnerability has been fixed by configuring Kiwi TCMS to serve with the Content-Security-Policy HTTP header which blocks inline JavaScript in all modern browsers.
Configure Content-Security-Policy header, see commit 6617cee0.
You can visit https://digi.ninja/blog/svg_xss.php for more technical details.
Independently disclosed by Antonio Spataro and @1d8.
kiwitcms < 12.1Upgrade to a patched release:
kiwitcms 12.1Connected by shared product, vendor, weakness, or advisory.
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