CVE-2026-57487 (GCVE-0-2026-57487)

Vulnerability from cvelistv5 – Published: 2026-10-16 15:33 – Updated: 2026-10-16 15:33
VLAI
Title
libupnp chunked HTTP bodies can bypass g_maxContentLength and be fully buffered
Summary
pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, Transfer-Encoding: chunked causes the HTTP parser in upnp/src/genlib/net/http/httpparser.c to leave parser->content_length at zero while parser_parse_chunky_entity and parser_parse_chunky_body accumulate decoded bytes in parser->msg.entity. The g_maxContentLength checks in http_RecvMessage in upnp/src/genlib/net/http/httpreadwrite.c therefore reject oversized numeric Content-Length bodies but do not enforce the same limit on decoded chunked bodies. A remote peer that can reach a SOAP, GENA, miniserver, or control-point HTTP response path can make the process buffer an entity larger than the configured maximum, causing resource exhaustion and denial of service. This issue is fixed in 2.0.2.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
pupnp pupnp Affected: < 2.0.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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          "versions": [
            {
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          "value": "pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, Transfer-Encoding: chunked causes the HTTP parser in upnp/src/genlib/net/http/httpparser.c to leave parser-\u003econtent_length at zero while parser_parse_chunky_entity and parser_parse_chunky_body accumulate decoded bytes in parser-\u003emsg.entity. The g_maxContentLength checks in http_RecvMessage in upnp/src/genlib/net/http/httpreadwrite.c therefore reject oversized numeric Content-Length bodies but do not enforce the same limit on decoded chunked bodies. A remote peer that can reach a SOAP, GENA, miniserver, or control-point HTTP response path can make the process buffer an entity larger than the configured maximum, causing resource exhaustion and denial of service. This issue is fixed in 2.0.2."
        }
      ],
      "metrics": [
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            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-16T15:33:56.394Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/pupnp/pupnp/security/advisories/GHSA-gcj7-j9f7-q84c",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/pupnp/pupnp/security/advisories/GHSA-gcj7-j9f7-q84c"
        },
        {
          "name": "https://github.com/pupnp/pupnp/commit/9ff9bc583ad8ee4ba022634434a7b71db9bd96e1",
          "tags": [
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          ],
          "url": "https://github.com/pupnp/pupnp/commit/9ff9bc583ad8ee4ba022634434a7b71db9bd96e1"
        },
        {
          "name": "https://github.com/pupnp/pupnp/releases/tag/release-2.0.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pupnp/pupnp/releases/tag/release-2.0.2"
        }
      ],
      "source": {
        "advisory": "GHSA-gcj7-j9f7-q84c",
        "discovery": "UNKNOWN"
      },
      "title": "libupnp chunked HTTP bodies can bypass g_maxContentLength and be fully buffered"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57487",
    "datePublished": "2026-10-16T15:33:56.394Z",
    "dateReserved": "2026-06-24T14:53:40.111Z",
    "dateUpdated": "2026-10-16T15:33:56.394Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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                "product": "pupnp",
                "vendor": "pupnp",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 2.0.2"
                  }
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              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.2, Transfer-Encoding: chunked causes the HTTP parser in upnp/src/genlib/net/http/httpparser.c to leave parser-\u003econtent_length at zero while parser_parse_chunky_entity and parser_parse_chunky_body accumulate decoded bytes in parser-\u003emsg.entity. The g_maxContentLength checks in http_RecvMessage in upnp/src/genlib/net/http/httpreadwrite.c therefore reject oversized numeric Content-Length bodies but do not enforce the same limit on decoded chunked bodies. A remote peer that can reach a SOAP, GENA, miniserver, or control-point HTTP response path can make the process buffer an entity larger than the configured maximum, causing resource exhaustion and denial of service. This issue is fixed in 2.0.2."
          }
        ],
        "id": "CVE-2026-57487",
        "lastModified": "2026-10-16T18:09:59.750",
        "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"
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              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-16T16:18:44.663",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pupnp/pupnp/commit/9ff9bc583ad8ee4ba022634434a7b71db9bd96e1"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pupnp/pupnp/releases/tag/release-2.0.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pupnp/pupnp/security/advisories/GHSA-gcj7-j9f7-q84c"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
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            "description": [
              {
                "lang": "en",
                "value": "CWE-770"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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