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MitreCVE-2020-8421

HistoryJan 28, 2020 - 9:15 p.m.

CVE-2020-8421

2020-01-2821:15:12

CWE-79

mitre

web.nvd.nist.gov

joomla

xss

vulnerability

username escaping

com_actionlogs

cve-2020-8421

nvd

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AI Score

6.1

Confidence

High

EPSS

0.001

Percentile

42.3%

JSON

An issue was discovered in Joomla! before 3.9.15. Inadequate escaping of usernames allows XSS attacks in com_actionlogs.

Affected configurations

Nvd

Node

joomlajoomla\!Range3.9.0–3.9.14

VendorProductVersionCPE
joomlajoomla\!*cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
joomla	joomla\!	*	cpe:2.3:a:joomla:joomla\!::::::::

References

developer.joomla.org/security-centre/800-20200103-core-xss-in-com-actionlogs

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AI Score

6.1

Confidence

High

EPSS

0.001

Percentile

42.3%

JSON

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