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No exploitation reportedFix available

CVE-2021-45086

No exploitation reported by the sources we read.

  • Published2021-12-16
  • Fixed in41.1 · 40.4
  • WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2021-12-1603:15CVE publishedNVD

Versions per branch

NVD
Gnome epiphany
BranchAffectedFixed in
41.x≥ 41.0, < 41.141.1
40.4< 40.440.4
Debian debian linux
BranchAffectedFixed in
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • epiphanyopenEuler:22.03-LTSall versions · fixed in 40.6-1.oe2203
  • epiphanyMageia:8all versions · fixed in 3.38.2-1.1.mga8
  • epiphanyCleanStartall versions · fixed in 41.3-r0
  • epiphanyAlpine:v3.24from 41.0 · fixed in 41.3-r0
  • epiphanyAlpine:v3.23from 41.0 · fixed in 41.3-r0
  • epiphanyAlpine:v3.22from 41.0 · fixed in 41.3-r0
  • epiphanyAlpine:v3.21from 41.0 · fixed in 41.3-r0
  • epiphanyAlpine:v3.20from 41.0 · fixed in 41.3-r0

13 more package ranges on OSV.dev

Vendor advisories

Full record on NVD

Fix

  1. Update Gnome epiphany to 41.1 · 40.4

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published
2021-12-16
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-vv96-jq6f-v366

Frequently asked questions

What is 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.

Is CVE-2021-45086 actively exploited?

Active exploitation of CVE-2021-45086 has not been confirmed. Its EPSS score was 1.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-45086?

CVE-2021-45086 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

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Sources for this record