golang-filippo-edwards25519 — security advisory

{
  "id": "50b05b30fcd94979afcc303d8ac357ed9ed35bd14dcac39ffb261b65daa93436",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-26958",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-26958",
    "summary": "filippo.io/edwards25519 is a Go library implementing the edwards25519 elliptic curve with APIs for building cryptographic primitives. In versions 1.1.0 and earlier, MultiScalarMult produces invalid results or undefined behavior if the receiver is not the identity point. If (*Point).MultiScalarMult is called on an initialized point that is not the identity point, it returns an incorrect result. If the method is called on an uninitialized point, the behavior is undefined. In particular, if the receiver is the zero value, MultiScalarMult returns an invalid point that compares Equal to every other point. Note that MultiScalarMult is a rarely used, advanced API. For example, users who depend on filippo.io/edwards25519 only through github.com/go-sql-driver/mysql are not affected. This issue has been fixed in version 1.1.1.",
    "evidence": "osv:UBUNTU-CVE-2026-26958",
    "products": [
      {
        "name": {
          "value": "golang-filippo-edwards25519",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.0.0~beta.3-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.0~rc1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.0~rc1+git20210721-0.1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-filippo-edwards25519",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.0.0~rc1+git20210721-0.1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-filippo-edwards25519",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.0.0~rc1+git20210721-0.1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-filippo-edwards25519",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.0.0~rc1+git20210721-0.1build1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.2.0-1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.2.0-2",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-filippo-edwards25519",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.0.0~rc1+git20210721-0.1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.0~rc1+git20210721-0.1build1",
            "evidence": "/affected/4/versions"
          }
        ]
      }
    ],
    "severity": "low",
    "structured": {
      "id": "UBUNTU-CVE-2026-26958",
      "aliases": [
        "UBUNTU-CVE-2026-26958"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-filippo-edwards25519",
            "purl": "pkg:deb/ubuntu/golang-filippo-edwards25519?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "1.0.0~beta.3-2",
            "1.0.0~rc1-1",
            "1.0.0~rc1+git20210721-0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26958.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "golang-filippo-edwards25519-dev",
                "binary_version": "1.0.0~rc1+git20210721-0.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-filippo-edwards25519",
            "purl": "pkg:deb/ubuntu/golang-filippo-edwards25519?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "1.0.0~rc1+git20210721-0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26958.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "golang-filippo-edwards25519-dev",
                "binary_version": "1.0.0~rc1+git20210721-0.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-filippo-edwards25519",
            "purl": "pkg:deb/ubuntu/golang-filippo-edwards25519?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "1.0.0~rc1+git20210721-0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26958.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "golang-filippo-edwards25519-dev",
                "binary_version": "1.0.0~rc1+git20210721-0.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-filippo-edwards25519",
            "purl": "pkg:deb/ubuntu/golang-filippo-edwards25519?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "1.0.0~rc1+git20210721-0.1build1",
            "1.2.0-1",
            "1.2.0-2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26958.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "golang-filippo-edwards25519-dev",
                "binary_version": "1.2.0-2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-filippo-edwards25519",
            "purl": "pkg:deb/ubuntu/golang-filippo-edwards25519?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "1.0.0~rc1+git20210721-0.1",
            "1.0.0~rc1+git20210721-0.1build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26958.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "golang-filippo-edwards25519-dev",
                "binary_version": "1.0.0~rc1+git20210721-0.1build1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:58:48.205035366Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-26958"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-26958",
        "https://www.cve.org/CVERecord?id=CVE-2026-26958",
        "https://github.com/FiloSottile/edwards25519/security/advisories/GHSA-fw7p-63qq-7hpr"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-26958",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 359066,
  "published_at": "2026-02-19T23:16:00+00:00"
}