Security advisory

{
  "id": "8a5603958da16c49995e8b0e945d2534b66e1e5bee1a90188f54b2a2f48c12f1",
  "url": "https://osv.dev/vulnerability/CVE-2026-41990",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-41990",
    "summary": "Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.",
    "evidence": "osv:CVE-2026-41990",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-41990",
      "aliases": [
        "CVE-2026-41990"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "git://git.gnupg.org/libgcrypt.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "efd5e1e7b4e7861b53eafdbf197fd6d4ff6f45e1"
                },
                {
                  "fixed": "efc346430901b84f1f580a147191624d7ded0db6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.12.0"
                      },
                      {
                        "fixed": "1.12.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "libgcrypt-1.12.1",
            "libgcrypt-1.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41990.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/gpg/libgcrypt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "efd5e1e7b4e7861b53eafdbf197fd6d4ff6f45e1"
                },
                {
                  "fixed": "efc346430901b84f1f580a147191624d7ded0db6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.12.0"
                      },
                      {
                        "fixed": "1.12.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "libgcrypt-1.12.1",
            "libgcrypt-1.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41990.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.619929174Z",
      "provider": "osv",
      "references": [
        "https://dev.gnupg.org/T8208",
        "https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html",
        "https://www.openwall.com/lists/oss-security/2026/04/21/1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41990.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-41990"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-787"
        ],
        "cna_assigner": "mitre",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "1.12.0"
                  },
                  {
                    "fixed": "1.12.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41990.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-41990",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497768,
  "published_at": "2026-04-23T04:39:04.524+00:00"
}