FKIE_CVE-2025-63950

Vulnerability from fkie_nvd - Published: 2025-12-18 21:15 - Updated: 2026-10-13 11:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An insecure deserialization vulnerability exists in the download.php script of the to3k Twittodon application through commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). The 'obj' parameter receives base64-encoded data that is passed directly to the unserialize() function without validation. This allows a remote, unauthenticated attacker to inject arbitrary PHP objects, leading to a denial of service.
References
cve@mitre.orghttps://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-2025-63950.mdExploit, Third Party Advisory
cve@mitre.orghttps://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-pending-Deserialization.mdExploit, Third Party Advisory
Impacted products
Vendor Product Version
tomaszdunia twittodon *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tomaszdunia:twittodon:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ABA7F1E5-E1B6-4D09-B4EE-257059327575",
              "versionEndIncluding": "2023-02-28",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An insecure deserialization vulnerability exists in the download.php script of the to3k Twittodon application through commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). The \u0027obj\u0027 parameter receives base64-encoded data that is passed directly to the unserialize() function without validation. This allows a remote, unauthenticated attacker to inject arbitrary PHP objects, leading to a denial of service."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de deserializaci\u00f3n insegura existe en el script download.php de la aplicaci\u00f3n to3k Twittodon a trav\u00e9s del commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). El par\u00e1metro \u0027obj\u0027 recibe datos codificados en base64 que se pasan directamente a la funci\u00f3n unserialize() sin validaci\u00f3n. Esto permite a un atacante remoto y no autenticado inyectar objetos PHP arbitrarios, lo que lleva a una denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2025-63950",
  "lastModified": "2026-10-13T11:10:00.203",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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              "exploitation": "poc"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-12-18T21:20:39.320810Z",
          "version": "2.0.3"
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  },
  "published": "2025-12-18T21:15:54.970",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-2025-63950.md"
    },
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      "source": "cve@mitre.org",
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      "url": "https://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-pending-Deserialization.md"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.