Vulnerability-Lookup

PYSEC-2026-1536

Vulnerability from pysec - Published: 2026-07-07 16:02 - Updated: 2026-07-07 17:24

Details

py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Impacted products

Name	purl
libp2p	pkg:pypi/libp2p

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "libp2p",
        "purl": "pkg:pypi/libp2p"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.0a0",
        "0.1.1",
        "0.1.2",
        "0.1.3",
        "0.1.4",
        "0.1.5",
        "0.2.0",
        "0.2.1",
        "0.2.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-29606",
    "GHSA-x8c6-gj59-6rx8"
  ],
  "details": "py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.",
  "id": "PYSEC-2026-1536",
  "modified": "2026-07-07T17:24:30.435829Z",
  "published": "2026-07-07T16:02:57.706656Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29606"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/issues/526"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/pull/531/files"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/commit/e150d3153af30530ce61d751bc166e099f1ead7a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/libp2p/py-libp2p"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/compare/v0.2.2...v0.2.3"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/libp2p"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-x8c6-gj59-6rx8"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "py-libp2p is vulnerable to DoS attacks through use of large RSA keys"
}

CVE-2025-29606 (GCVE-0-2025-29606)

Vulnerability from cvelistv5 – Published: 2025-07-14 00:00 – Updated: 2025-07-14 14:13

Summary

py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

mitre

References

3 references

URL	Tags
https://github.com/libp2p/py-libp2p/issues/526
https://github.com/libp2p/py-libp2p/pull/531/files
https://github.com/libp2p/py-libp2p/compare/v0.2.…

Impacted products

1 product

Vendor	Product	Version
libp2p	py-libp2p	Affected: 0 , < 0.2.3 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-29606",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-14T14:12:46.592647Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-14T14:13:07.783Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "py-libp2p",
          "vendor": "libp2p",
          "versions": [
            {
              "lessThan": "0.2.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-14T04:16:30.142Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/libp2p/py-libp2p/issues/526"
        },
        {
          "url": "https://github.com/libp2p/py-libp2p/pull/531/files"
        },
        {
          "url": "https://github.com/libp2p/py-libp2p/compare/v0.2.2...v0.2.3"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-29606",
    "datePublished": "2025-07-14T00:00:00.000Z",
    "dateReserved": "2025-03-11T00:00:00.000Z",
    "dateUpdated": "2025-07-14T14:13:07.783Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-X8C6-GJ59-6RX8

Vulnerability from github – Published: 2025-07-14 06:30 – Updated: 2025-07-14 20:55

Summary

py-libp2p is vulnerable to DoS attacks through use of large RSA keys

Details

py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "libp2p"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-29606"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-14T20:55:31Z",
    "nvd_published_at": "2025-07-14T05:15:27Z",
    "severity": "MODERATE"
  },
  "details": "py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.",
  "id": "GHSA-x8c6-gj59-6rx8",
  "modified": "2025-07-14T20:55:31Z",
  "published": "2025-07-14T06:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29606"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/issues/526"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/pull/531/files"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/commit/e150d3153af30530ce61d751bc166e099f1ead7a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/libp2p/py-libp2p"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libp2p/py-libp2p/compare/v0.2.2...v0.2.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "py-libp2p is vulnerable to DoS attacks through use of large RSA keys"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2026-1536

CVE-2025-29606 (GCVE-0-2025-29606)

GHSA-X8C6-GJ59-6RX8

Tags

Sightings

Nomenclature