serendipity_moveMediaDirectory in Serendipity 2.0.3 allows remote attackers to upload and execute arbitrary PHP code because it mishandles an extensionless filename during a rename, as demonstrated by "php" as a filename.
https://demo.ripstech.com/projects/serendipity_2.0.3
https://blog.ripstech.com/2016/serendipity-from-file-upload-to-code-execution/
Source: Mitre, NVD
Published: 2019-05-24
Updated: 2019-05-29
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00748