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Vulnerability details: VCID-q1xj-wvgm-8qde
Vulnerability ID VCID-q1xj-wvgm-8qde
Aliases CVE-2021-45087
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 5.5
Risk 2.8
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
System Score Found at
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-45087
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-45087
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-45087
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-45087
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45085
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45086
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45087
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45088
https://gitlab.gnome.org/GNOME/epiphany/-/issues/1612
https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045
https://lists.debian.org/debian-lts-announce/2022/08/msg00006.html
https://www.debian.org/security/2022/dsa-5042
cpe:2.3:a:gnome:epiphany:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnome:epiphany:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
CVE-2021-45087 https://nvd.nist.gov/vuln/detail/CVE-2021-45087
USN-5561-1 https://usn.ubuntu.com/5561-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-45087
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-45087
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.54141
EPSS Score 0.00316
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:37:10.700593+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.21/community.json 37.0.0