CVE-2026-46690

{
  "id": "CVE-2026-46690",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-12T16:16:29.197",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "unbounded_spsc is an \"unbounded\" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches."
    },
    {
      "lang": "es",
      "value": "unbounded_spsc es una ’ilimitada’ extensión de bounded_spsc_queue. En las versiones 0.2.0 y anteriores, la transmutación de puntero como valor de sender::send causa una lectura OOB y una liberación de Arc falso bajo una condición de carrera TX/RX. En el momento de la publicación, no hay parches disponibles públicamente."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "spearman",
          "product": "unbounded-spsc",
          "versions": [
            {
              "version": "<= 0.2.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 4.7
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
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          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 4.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-12T15:54:19.131542Z",
          "id": "CVE-2026-46690",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-415"
        },
        {
          "lang": "en",
          "value": "CWE-704"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:spearman:unbounded-spsc:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "0.2.0",
              "matchCriteriaId": "12D12A50-936D-46B8-9903-2A8A1420AB07"
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  "references": [
    {
      "url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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    {
      "url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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}