Medium severity · published Dec 16, 2021
CVE-2021-45087
XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 when View Source mode or Reader mode is used, as demonstrated by a a page title
6.1
CVSS
1.6%
EPSS
No
On KEV
Description
XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 when View Source mode or Reader mode is used, as demonstrated by a a page title.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
EP
Epiphany · Gnome
before 40.4; 41.0 before 41.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45087
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45087
Exploit
https://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
Patch
https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
Mailing List
https://lists.debian.org/debian-lts-announce/2022/08/msg00006.html
Third Party Advisory
https://www.debian.org/security/2022/dsa-5042
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