Vulnerability Details : CVE-2021-45086
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.
Vulnerability category: Cross site scripting (XSS)
Exploit prediction scoring system (EPSS) score for CVE-2021-45086
Probability of exploitation activity in the next 30 days: 0.10%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 40 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-45086
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2021-45086
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-45086
-
https://www.debian.org/security/2022/dsa-5042
Debian -- Security Information -- DSA-5042-1 epiphany-browserThird Party Advisory
-
https://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
Various XSS, including via page titles in about:overview (#1612) · Issues · GNOME / Epiphany · GitLabExploit;Vendor Advisory
-
https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
Properly encode untrusted data when injecting into trusted pages (!1045) · Merge requests · GNOME / Epiphany · GitLabPatch;Vendor Advisory
Products affected by CVE-2021-45086
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:gnome:epiphany:*:*:*:*:*:*:*:*
- cpe:2.3:a:gnome:epiphany:*:*:*:*:*:*:*:*