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GoogleOSV:BIT-MYBB-2020-19048

HistoryMar 06, 2024 - 11:00 a.m.

BIT-mybb-2020-19048

2024-03-0611:00:24

Google

osv.dev

cross site scripting

xss

mybb v1.8.20

injection

add new forum

title" field

remote attackers

web script

html

authenticated

post http request

forum management

admin page

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

31.6%

JSON

Cross Site Scripting (XSS) in MyBB v1.8.20 allows remote attackers to inject arbitrary web script or HTML via the “Title” field found in the “Add New Forum” page by doing an authenticated POST HTTP request to ‘/Upload/admin/index.php?module=forum-management&action=add’.

References

github.com/joelister/bug/issues/1

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

31.6%

JSON

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