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CVE-2026-28351

Estado: AnalizadaMedia (6.9)—

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Pypdf Project — Pypdf

CWE

Referencias

JSON original (NVD)

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          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-03-03T20:28:37.910844Z"
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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    "cvssMetricV40": [
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        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
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          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-02-27T21:16:19.177",
  "references": [
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      "url": "https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858",
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    {
      "url": "https://github.com/py-pdf/pypdf/releases/tag/6.7.4",
      "tags": [
        "Release Notes"
      ],
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    {
      "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "security-advisories@github.com",
      "description": [
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          "value": "CWE-400"
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    {
      "lang": "en",
      "value": "pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664."
    },
    {
      "lang": "es",
      "value": "pypdf es una librería PDF de Python puro, gratuita y de código abierto. Antes de la versión 6.7.4, un atacante que utiliza esta vulnerabilidad puede crear un PDF que conduce a un gran uso de memoria. Esto requiere analizar el flujo de contenido utilizando el filtro RunLengthDecode. Esto ha sido corregido en pypdf 6.7.4. Como solución alternativa, considere aplicar los cambios de la PR #3664."
    }
  ],
  "lastModified": "2026-06-17T10:28:27.863",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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              "versionEndExcluding": "6.7.4"
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          "operator": "OR"
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}