What is CVE-2021-45086?

CVE-2021-45086 is a Cross-Site Scripting (XSS) vulnerability that can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1.

What is the severity of CVE-2021-45086?

The severity of CVE-2021-45086 is medium with a severity value of 6.1.

Which software versions are affected by CVE-2021-45086?

Epiphany versions before 40.4 and 41.x before 41.1 are affected by CVE-2021-45086.

How can I mitigate the CVE-2021-45086 vulnerability in GNOME Web?

To mitigate the CVE-2021-45086 vulnerability, it is recommended to update GNOME Web to version 40.4 or above.

Vulnerability/
CVE-2021-45086

medium

6.1

CWE

16/12/2021

21/11/2024

CVE-2021-45086: XSS

Q: How can XSS occur in GNOME Web?

XSS can occur in GNOME Web because a server's suggested_filename is used as the pdf_name value in PDF.js.

First published: Thu Dec 16 2021(Updated: )

XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 because a server's suggested_filename is used as the pdf_name value in PDF.js.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
debian/epiphany-browser		3.32.1.2-3~deb10u1 3.32.1.2-3~deb10u3 3.38.2-1+deb11u3 43.1-1 45.0-1
GNOME Epiphany	<40.4
GNOME Epiphany	>=41.0<41.1
Debian Debian Linux	=11.0
	<40.4
	>=41.0<41.1
	=11.0

Remedy

https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045

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Reference Links

Frequently Asked Questions

What is CVE-2021-45086?
CVE-2021-45086 is a Cross-Site Scripting (XSS) vulnerability that can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1.
What is the severity of CVE-2021-45086?
The severity of CVE-2021-45086 is medium with a severity value of 6.1.
How can XSS occur in GNOME Web?
XSS can occur in GNOME Web because a server's suggested_filename is used as the pdf_name value in PDF.js.
Which software versions are affected by CVE-2021-45086?
Epiphany versions before 40.4 and 41.x before 41.1 are affected by CVE-2021-45086.
How can I mitigate the CVE-2021-45086 vulnerability in GNOME Web?
To mitigate the CVE-2021-45086 vulnerability, it is recommended to update GNOME Web to version 40.4 or above.

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