#VU59663 Cross-site scripting in GNOME Web (Epiphany)

Published: 2022-01-17

Vulnerability identifier: #VU59663

Vulnerability risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-45086


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GNOME Web (Epiphany)
Client/Desktop applications / Web browsers

Vendor: Gnome Development Team


The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data, because a server's suggested_filename is used as the pdf_name value in PDF.js. A remote attacker can and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Install updates from vendor's website.

Vulnerable software versions

GNOME Web (Epiphany): 41.0, 40.0 - 40.3

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability