CVE-2020-15249

October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) & v1.1.0.

• CWE-79
• CWE-79

• https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4Patch, Third Party Advisory
• https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4qThird Party Advisory
• https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4Patch, Third Party Advisory
• https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4qThird Party Advisory

Published

Nov 23, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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