PYSEC-2026-693

Vulnerability from pysec - Published: 2026-07-02 14:13 - Updated: 2026-07-06 07:36
VLAI
Details

A vulnerability was found in CPython which is used by openstack-nova's console proxy, noVNC. By crafting a malicious URL, noVNC could be made to redirect to any desired URL.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Impacted products
Name purl
nova pkg:pypi/nova
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "nova",
        "purl": "pkg:pypi/nova"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "21.2.3"
            },
            {
              "introduced": "22.0.0"
            },
            {
              "fixed": "22.2.3"
            },
            {
              "introduced": "23.0.0"
            },
            {
              "fixed": "23.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "15.1.5",
        "16.1.6",
        "16.1.7",
        "16.1.8",
        "17.0.10",
        "17.0.11",
        "17.0.12",
        "17.0.13",
        "17.0.7",
        "17.0.8",
        "17.0.9",
        "18.0.2",
        "18.0.3",
        "18.1.0",
        "18.2.0",
        "18.2.1",
        "18.2.2",
        "18.2.3",
        "18.3.0",
        "19.0.0",
        "19.0.0.0rc1",
        "19.0.0.0rc2",
        "19.0.1",
        "19.0.2",
        "19.0.3",
        "19.1.0",
        "19.2.0",
        "19.3.0",
        "19.3.1",
        "19.3.2",
        "20.0.0",
        "20.0.0.0rc1",
        "20.0.0.0rc2",
        "20.0.1",
        "20.1.0",
        "20.1.1",
        "20.2.0",
        "20.3.0",
        "20.4.0",
        "20.4.1",
        "20.5.0",
        "20.6.0",
        "20.6.1",
        "21.0.0",
        "21.0.0.0rc1",
        "21.0.0.0rc2",
        "21.1.0",
        "21.1.1",
        "21.1.2",
        "21.2.0",
        "21.2.1",
        "21.2.2",
        "22.0.0",
        "22.0.1",
        "22.1.0",
        "22.2.0",
        "22.2.1",
        "22.2.2",
        "23.0.0",
        "23.0.1",
        "23.0.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3654",
    "GHSA-vqp6-j452-j6wp"
  ],
  "details": "A vulnerability was found in CPython which is used by openstack-nova\u0027s console proxy, noVNC. By crafting a malicious URL, noVNC could be made to redirect to any desired URL.",
  "id": "PYSEC-2026-693",
  "modified": "2026-07-06T07:36:58.527262Z",
  "published": "2026-07-02T14:13:15.447305Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3654"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/nova/+bug/1927677"
    },
    {
      "type": "WEB",
      "url": "https://bugs.python.org/issue32084"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961439"
    },
    {
      "type": "PACKAGE",
      "url": "https://opendev.org/openstack/nova"
    },
    {
      "type": "WEB",
      "url": "https://opendev.org/openstack/nova/commit/04d48527b62a35d912f93bc75613a6cca606df66"
    },
    {
      "type": "WEB",
      "url": "https://opendev.org/openstack/nova/commit/8906552cfc2525a44251d4cf313ece61e57251eb"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202305-02"
    },
    {
      "type": "WEB",
      "url": "https://security.openstack.org/ossa/OSSA-2021-002.html"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2021/07/29/2"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/nova"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-vqp6-j452-j6wp"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Open Redirect in CPython that affects users of OpenStack Nova"
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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