CVE-2026-41990

{
  "id": "CVE-2026-41990",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-23T05:16:05.897",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data."
    },
    {
      "lang": "es",
      "value": "Libgcrypt anterior a 1.12.2 maneja incorrectamente la firma Dilithium. Las escrituras en un array estático carecen de una comprobación de límites, pero no utilizan datos controlados por el atacante."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "gnupg",
          "product": "Libgcrypt",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.12.0",
              "lessThan": "1.12.2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 2.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-23T15:58:26.094245Z",
          "id": "CVE-2026-41990",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.12.0",
              "versionEndExcluding": "1.12.2",
              "matchCriteriaId": "DD6AEDAC-5EDC-4918-877A-A16792DB52A2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://dev.gnupg.org/T8208",
      "source": "[email protected]",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html",
      "source": "[email protected]",
      "tags": [
        "Mailing List",
        "Release Notes"
      ]
    },
    {
      "url": "https://www.openwall.com/lists/oss-security/2026/04/21/1",
      "source": "[email protected]",
      "tags": [
        "Mailing List",
        "Release Notes"
      ]
    }
  ]
}