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CVE-2026-7736

Full vulnerability record from the local CVENow database.

Description

A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.

Severity
MEDIUM
CVSS score
6.9 (v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-05-04 07:16:01.517000
Last modified
2026-10-26 19:10:00.163000
View original CVE JSON
{
  "id": "CVE-2026-7736",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-04T07:16:01.517",
  "lastModified": "2026-10-26T19:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component."
    },
    {
      "lang": "es",
      "value": "Se determinó una vulnerabilidad en osrg GoBGP hasta la versión 4.3.0. Afectada por esta vulnerabilidad es la función parseRibEntry del archivo pkg/packet/mrt/mrt.go. La ejecución de una manipulación puede conducir a un desbordamiento negativo de enteros. Es posible lanzar el ataque de forma remota. La actualización a la versión 4.4.0 soluciona este problema. Este parche se denomina 76d911046344a3923cbe573364197aa081944592. Se sugiere actualizar el componente afectado."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "osrg",
          "product": "GoBGP",
          "cpes": [
            "cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:*"
          ],
          "versions": [
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              "version": "4.0",
              "status": "affected"
            },
            {
              "version": "4.1",
              "status": "affected"
            },
            {
              "version": "4.2",
              "status": "affected"
            },
            {
              "version": "4.3.0",
              "status": "affected"
            },
            {
              "version": "4.4.0",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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          "vulnIntegrityImpact": "LOW",
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          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
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    "cvssMetricV2": [
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        "acInsufInfo": false,
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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      }
    ],
    "ssvcV203": [
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        "ssvcData": {
          "timestamp": "2026-05-04T10:37:13.494602Z",
          "id": "CVE-2026-7736",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  },
  "weaknesses": [
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      "description": [
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          "value": "CWE-189"
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        {
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          "value": "CWE-191"
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  "configurations": [
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          "cpeMatch": [
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  "references": [
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      "url": "https://github.com/osrg/gobgp/",
      "source": "[email protected]",
      "tags": [
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    {
      "url": "https://github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592",
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    {
      "url": "https://vuldb.com/submit/807604",
      "source": "[email protected]",
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    {
      "url": "https://vuldb.com/vuln/360911",
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    {
      "url": "https://vuldb.com/vuln/360911/cti",
      "source": "[email protected]",
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    }
  ]
}