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CVE-2022-35649

Status: ModifiedCritical (9.8)—💥 PoC

The vulnerability was found in Moodle, occurs due to improper input validation when parsing PostScript code. An omitted execution parameter results in a remote code execution risk for sites running GhostScript versions older than 9.50. Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (2)

Fedoraproject — FedoraMoodle — Moodle

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2022-35649",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "patrick@puiterwijk.org",
      "affectedData": [
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          "vendor": "n/a",
          "product": "Moodle",
          "versions": [
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              "version": "Fixed in moodle 4.0.2, moodle 3.11.8, moodle 3.9.15"
            }
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  "published": "2022-07-25T16:15:08.247",
  "references": [
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      "url": "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-75044",
      "tags": [
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      "source": "patrick@puiterwijk.org"
    },
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      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
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      "source": "patrick@puiterwijk.org"
    },
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      "source": "patrick@puiterwijk.org"
    },
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  "vulnStatus": "Modified",
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      "source": "patrick@puiterwijk.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The vulnerability was found in Moodle, occurs due to improper input validation when parsing PostScript code. An omitted execution parameter results in a remote code execution risk for sites running GhostScript versions older than 9.50. Successful exploitation of this vulnerability may result in complete compromise of vulnerable system."
    },
    {
      "lang": "es",
      "value": "La vulnerabilidad fue encontrada en Moodle, ocurre debido a una comprobación de entrada inapropiada cuando se analiza el código PostScript. Un parámetro de ejecución omitido resulta en un riesgo de ejecución de código remota para los sitios que ejecutan versiones de GhostScript anteriores a 9.50. Una explotación con éxito de esta vulnerabilidad puede resultar en el compromiso completo del sistema vulnerable"
    }
  ],
  "lastModified": "2026-06-17T04:52:01.680",
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