CVE-2020-15249: low-severity vulnerability in octobercms october
Stored XSS by authenticated backend user with access to upload files
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.8epss 0.5%
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Affected products
octobercms · octoberRelated CVEs — octobercms october
In the same product, most dangerous first.
CVE-2021-32648HIGHAccount Takeover in OctobercmsEPSS 91.2%KEVCVE-2022-21705HIGHAuthenticated remote code execution in octobercmsEPSS 8.6%CVE-2020-5295MEDIUMLocal File read vulnerability in OctoberCMSEPSS 7.4%CVE-2021-32650HIGHArbitrary code execution in october/systemEPSS 2.2%CVE-2021-21265MEDIUMOctober CMS vulnerable to Potential Host Header Poisoning on misconfigured serversEPSS 1.7%CVE-2020-15246HIGHLocal File Inclusion by unauthenticated usersEPSS 1.7%