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CVE-2026-66337

Estado: AnalizadaMedia (6.5)—

A flaw was found in libsoup. An unsigned integer underflow in the soup_filter_input_stream_read_until() function causes a heap buffer over-read when parsing multipart HTTP responses. A malicious HTTP server can exploit this by sending a crafted multipart response, potentially causing the client application to crash or disclose sensitive heap memory.

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 (2)

Gnome — LibsoupRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
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              "automatable": "yes"
            },
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-07-27T16:01:07.951976Z"
        }
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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  "published": "2026-07-24T23:16:51.760",
  "references": [
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      "tags": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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    }
  ],
  "lastModified": "2026-08-24T16:44:56.007",
  "configurations": [
    {
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        {
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