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CVE-2024-34535

Status: AnalyzedMedium (5.9)—

In Mastodon 4.1.6, API endpoint rate limiting can be bypassed by setting a crafted HTTP request header.

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 (1)

Joinmastodon — Mastodon

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2024-34535",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-34535",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-03T19:40:08.651173Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-10-03T18:15:04.693",
  "references": [
    {
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-q3rg-xx5v-4mxh",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/mastodon/mastodon/tags",
      "tags": [
        "Release Notes"
      ],
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Mastodon 4.1.6, API endpoint rate limiting can be bypassed by setting a crafted HTTP request header."
    },
    {
      "lang": "es",
      "value": "En Mastodon 4.1.6, la limitación de velocidad del endpoint de la API se puede evitar configurando un encabezado de solicitud HTTP manipulado específicamente."
    }
  ],
  "lastModified": "2026-06-17T07:33:35.243",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4E0B49C2-250A-4A5E-AEB1-54C103602E0A",
              "versionEndIncluding": "4.1.16"
            },
            {
              "criteria": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7B713D44-3FB7-48E5-959A-63E4B4EF5159",
              "versionEndIncluding": "4.2.8",
              "versionStartIncluding": "4.2.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}