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CVE-2024-3302

Status: AnalyzedLow (3.7)—

There was no limit to the number of HTTP/2 CONTINUATION frames that would be processed. A server could abuse this to create an Out of Memory condition in the browser. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Mozilla — FirefoxMozilla — Thunderbird

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2024-3302",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-3302",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-05-24T14:53:12.973501Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.7,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "125",
              "versionType": "custom"
            }
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        },
        {
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          "product": "Firefox ESR",
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            }
          ]
        },
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          "product": "Thunderbird",
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              "version": "unspecified",
              "lessThan": "115.10",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-04-16T16:15:08.310",
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1881183",
      "tags": [
        "Issue Tracking"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://kb.cert.org/vuls/id/421644",
      "tags": [
        "US Government Resource"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html",
      "tags": [
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      "source": "security@mozilla.org"
    },
    {
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      "tags": [
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      "source": "security@mozilla.org"
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      "tags": [
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      "source": "security@mozilla.org"
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      "source": "security@mozilla.org"
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    {
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      "tags": [
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-20/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "lang": "en",
          "value": "CWE-770"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "There was no limit to the number of HTTP/2 CONTINUATION frames that would be processed. A server could abuse this to create an Out of Memory condition in the browser. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10."
    },
    {
      "lang": "es",
      "value": "No había límite para la cantidad de frames de CONTINUATION HTTP/2 que se procesarían. Un servidor podría abusar de esto para crear una condición de falta de memoria en el navegador. Esta vulnerabilidad afecta a Firefox &lt; 125 y Firefox ESR &lt; 115.10."
    }
  ],
  "lastModified": "2026-06-17T07:43:44.823",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "115.10"
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              "vulnerable": true,
              "matchCriteriaId": "7334A1C6-C6BF-4C70-ADF1-736BCE0EA227",
              "versionEndExcluding": "125.0"
            },
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              "vulnerable": true,
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              "versionEndIncluding": "115.10"
            }
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          "operator": "OR"
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  "sourceIdentifier": "security@mozilla.org"
}