CVE-2020-11807

Because of Unrestricted Upload of a File with a Dangerous Type, Sourcefabric Newscoop 4.4.7 allows an authenticated user to execute arbitrary PHP code (and sometimes terminal commands) on a server by making an avatar update and then visiting the avatar file under the /images/ path.

• CWE-434

• https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1eeExploit, Third Party Advisory
• https://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226Patch, Third Party Advisory
• https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1eeExploit, Third Party Advisory
• https://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226Patch, Third Party Advisory

Published

May 19, 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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