CVE-2021-28977

MEDIUM

GetSimpleCMS 3.3.16 - Cross-Site Scripting via File Upload

Title source: llm
STIX 2.1

Description

Cross Site Scripting vulnerability in GetSimpleCMS 3.3.16 in admin/upload.php by adding comments or jpg and other file header information to the content of xla, pages, and gzip files,

References (1)

Core 1
Core References
Third Party Advisory x_refsource_misc
https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1336

Scores

CVSS v3 4.8
EPSS 0.0051
EPSS Percentile 39.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
get-simple/getsimplecms < 3.3.15
Published Jun 23, 2021
Tracked Since Feb 18, 2026