ubuntu-cve-2021-45085
Vulnerability from osv_ubuntu
Published
2021-12-16 03:15
Modified
2025-10-24 04:50
Summary
Details

XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page on the Most Visited list.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "epiphany-browser",
            "binary_version": "3.18.11-0ubuntu1"
          },
          {
            "binary_name": "epiphany-browser-data",
            "binary_version": "3.18.11-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "epiphany-browser",
        "purl": "pkg:deb/ubuntu/epiphany-browser@3.18.11-0ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.16.3-1ubuntu1",
        "3.18.0-1ubuntu2",
        "3.18.1-1ubuntu1",
        "3.18.3-0ubuntu1",
        "3.18.5-0ubuntu1",
        "3.18.5-0ubuntu1.1",
        "3.18.10-0ubuntu1",
        "3.18.11-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "epiphany-browser",
            "binary_version": "3.28.6-0ubuntu1"
          },
          {
            "binary_name": "epiphany-browser-data",
            "binary_version": "3.28.6-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "epiphany-browser",
        "purl": "pkg:deb/ubuntu/epiphany-browser@3.28.6-0ubuntu1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.26.1-1ubuntu1",
        "3.26.1-1ubuntu2",
        "3.26.1-1ubuntu4",
        "3.26.5.1-1ubuntu1",
        "3.27.90-1ubuntu1",
        "3.28.0.1-1ubuntu1",
        "3.28.1-1ubuntu1",
        "3.28.5-0ubuntu1",
        "3.28.6-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "epiphany-browser",
            "binary_version": "3.36.4-0ubuntu2"
          },
          {
            "binary_name": "epiphany-browser-data",
            "binary_version": "3.36.4-0ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "epiphany-browser",
        "purl": "pkg:deb/ubuntu/epiphany-browser@3.36.4-0ubuntu2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.36.4-0ubuntu2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.34.1-1",
        "3.34.1-1build1",
        "3.36.0-1",
        "3.36.1-1",
        "3.36.2-0ubuntu1",
        "3.36.3-0ubuntu1",
        "3.36.4-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page on the Most Visited list.",
  "id": "UBUNTU-CVE-2021-45085",
  "modified": "2025-10-24T04:50:38Z",
  "published": "2021-12-16T03:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-45085"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5561-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-45085"
    }
  ],
  "related": [
    "USN-5561-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-45085"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.