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squirrel3 — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2026-3389

A vulnerability was determined in Squirrel up to 3.2. This vulnerability affects the function sqstd_rex_newnode in the library sqstdlib/sqstdrex.cpp. Executing a manipulation can lead to null pointer dereference. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Products
squirrel3
Affected versions
3.1-4, 3.1-5, 3.1-8, 3.1-8.2, 3.1-8.3, 3.1-8.4, 3.1-8.5, 3.1-8build1
Fixed versions
Not specified
CVEs
CVE-2026-3389
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 03:00 UTC · Revision 1

Source evidence

UBUNTU-CVE-2026-3389

core-osv · Original source

Published 1 Mar 2026, 10:16 UTC

A vulnerability was determined in Squirrel up to 3.2. This vulnerability affects the function sqstd_rex_newnode in the library sqstdlib/sqstdrex.cpp. Executing a manipulation can lead to null pointer dereference. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

osv:UBUNTU-CVE-2026-3389

squirrel3

Fixed versions: Not specified

squirrel3

Fixed versions: Not specified

squirrel3

Fixed versions: Not specified

squirrel3

Fixed versions: Not specified

squirrel3

Fixed versions: Not specified

squirrel3

Fixed versions: Not specified

Complete source record
{
  "id": "dbc09bb6af34a8a99bec6bd085a027a508186012a6d9761f9c9e787cfca91043",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-3389",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-3389",
    "summary": "A vulnerability was determined in Squirrel up to 3.2. This vulnerability affects the function sqstd_rex_newnode in the library sqstdlib/sqstdrex.cpp. Executing a manipulation can lead to null pointer dereference. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.",
    "evidence": "osv:UBUNTU-CVE-2026-3389",
    "products": [
      {
        "name": {
          "value": "squirrel3",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.1-4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.1-5",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "squirrel3",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.1-8",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "3.1-8build1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
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          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
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            "evidence": "/affected/2/versions"
          }
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      },
      {
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          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.1-8.2",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "squirrel3",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.1-8.3",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.1-8.4",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.1-8.5",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "squirrel3",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.1-8.2",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "3.1-8.3",
            "evidence": "/affected/5/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2026-3389",
      "aliases": [
        "UBUNTU-CVE-2026-3389"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "squirrel3",
            "purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "3.1-4",
            "3.1-5"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3389.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsquirrel3-0",
                "binary_version": "3.1-5"
              },
              {
                "binary_name": "squirrel3",
                "binary_version": "3.1-5"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
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                }
              ]
            }
          ],
          "package": {
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            "purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
          },
          "versions": [
            "3.1-8",
            "3.1-8build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3389.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsquirrel3-0",
                "binary_version": "3.1-8build1"
              },
              {
                "binary_name": "squirrel3",
                "binary_version": "3.1-8build1"
              }
            ]
          }
        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
              "events": [
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            }
          ],
          "package": {
            "name": "squirrel3",
            "purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "3.1-8build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3389.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsquirrel3-0",
                "binary_version": "3.1-8build1"
              },
              {
                "binary_name": "squirrel3",
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            ]
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        },
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          ],
          "package": {
            "name": "squirrel3",
            "purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "3.1-8.2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3389.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsquirrel3-0",
                "binary_version": "3.1-8.2"
              },
              {
                "binary_name": "squirrel3",
                "binary_version": "3.1-8.2"
              }
            ]
          }
        },
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          "package": {
            "name": "squirrel3",
            "purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "3.1-8.3",
            "3.1-8.4",
            "3.1-8.5"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3389.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsquirrel3-0",
                "binary_version": "3.1-8.5"
              },
              {
                "binary_name": "squirrel3",
                "binary_version": "3.1-8.5"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "squirrel3",
            "purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "3.1-8.2",
            "3.1-8.3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3389.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsquirrel3-0",
                "binary_version": "3.1-8.3"
              },
              {
                "binary_name": "squirrel3",
                "binary_version": "3.1-8.3"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T13:00:00.916602253Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-3389"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-3389",
        "https://www.cve.org/CVERecord?id=CVE-2026-3389",
        "https://github.com/albertodemichelis/squirrel/issues/314",
        "https://github.com/oneafter/0122/blob/main/i314/repro",
        "https://vuldb.com/?ctiid.348275",
        "https://vuldb.com/?id.348275",
        "https://vuldb.com/?submit.761315"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-3389",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 360124,
  "published_at": "2026-03-01T10:16:00+00:00"
}