CVE-2021-39136

Cross-site scripting vulnerability in file upload

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

baserCMS is an open source content management system with a focus on Japanese language support. In affected versions there is a cross-site scripting vulnerability in the file upload function of the management system of baserCMS. Users are advised to update as soon as possible. No workaround are available to mitigate this issue.

baserCMS es un sistema de administración de contenidos de código abierto centrado en el soporte del idioma Japonés. En las versiones afectadas se presenta una vulnerabilidad de tipo cross-site scripting en la función file upload del sistema de administración de baserCMS. Se recomienda a usuarios que actualicen lo antes posible. No se presentan soluciones disponibles para mitigar este problema.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-16 CVE Reserved
2021-08-25 CVE Published
2023-03-18 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (4)

URL	Tag	Source
http://jvn.jp/en/jp/JVN14134801/index.html	Third Party Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-hgjr-632x-qpp3	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/baserproject/basercms/commit/568d4cab5ba1cdee7bbf0133c676d02a98f6d7bc	2021-08-30

URL	Date	SRC
https://basercms.net/security/JVN_14134801	2021-08-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Basercms Search vendor "Basercms"		Basercms Search vendor "Basercms" for product "Basercms"				< 4.5.1 Search vendor "Basercms" for product "Basercms" and version " < 4.5.1"		-		Affected