Vulnerability-Lookup

PYSEC-2026-490

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:23

Details

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of pickle.loads, which is vulnerable to remote code execution.

Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.

Severity

9.8 (Critical)


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

Impacted products

Name	purl
pyfory	pkg:pypi/pyfory

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pyfory",
        "purl": "pkg:pypi/pyfory"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.12.0"
            },
            {
              "fixed": "0.12.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.12.0",
        "0.12.1",
        "0.12.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-61622",
    "GHSA-538v-3wq9-4h3r"
  ],
  "details": "Deserialization of untrusted data in\u00a0python in pyfory\u00a0versions 0.12.0 through 0.12.2, or the\u00a0legacy\u00a0pyfury versions from\u00a00.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources.\u00a0An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is\u00a0vulnerable to\u00a0remote code execution.\n\nUsers are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.",
  "id": "PYSEC-2026-490",
  "modified": "2026-07-01T20:23:02.648327Z",
  "published": "2026-06-29T11:50:36.968662Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61622"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/fory/pull/2629"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/fory/commit/379b948ecae5c3b849e5bdb3997978c9a163e40b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/fory"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/fory/releases/tag/v0.12.3"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/09/29/3"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/pyfory"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-538v-3wq9-4h3r"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Pyfory python is vulnerable to deserialization of untrusted data"
}

CVE-2025-61622 (GCVE-0-2025-61622)

Vulnerability from cvelistv5 – Published: 2025-10-01 09:55 – Updated: 2025-11-04 21:14

Title

Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory

Summary

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is vulnerable to remote code execution. Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 13:07 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread/vfn9hp9qt06db5yo1…	vendor-advisory
http://www.openwall.com/lists/oss-security/2025/09/29/3

Impacted products

2 products

Vendor	Product	Version
Apache Software Foundation	Apache Fory	Affected: 0.12.0 , ≤ 0.12.2 (semver)
Apache Software Foundation	Apache Fory	Affected: 0.1.0 , ≤ 0.10.3 (semver)

Credits

Mapta / BugBunny_ai

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-61622",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T13:07:55.196758Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T13:08:39.262Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:14:00.912Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/09/29/3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected",
          "packageName": "pyfory",
          "product": "Apache Fory",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "0.12.2",
              "status": "affected",
              "version": "0.12.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected",
          "packageName": "pyfury",
          "product": "Apache Fory",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "0.10.3",
              "status": "affected",
              "version": "0.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Mapta / BugBunny_ai"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "type": "text/html",
              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eDeserialization of untrusted data in\u0026nbsp;python in \u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003epyfory\u0026nbsp;\u003c/span\u003eversions 0.12.0 through 0.12.2, or the\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003elegacy\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003epyfury versions from\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp;0.1.0 through 0.10.3:\u003c/span\u003e allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources.\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eAn attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is\u0026nbsp;vulnerable to\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eremote code execution.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.\u003cbr\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "Deserialization of untrusted data in\u00a0python in pyfory\u00a0versions 0.12.0 through 0.12.2, or the\u00a0legacy\u00a0pyfury versions from\u00a00.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources.\u00a0An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is\u00a0vulnerable to\u00a0remote code execution.\n\nUsers are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "critical"
            },
            "type": "Textual description of severity"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "CWE-502 Deserialization of Untrusted Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-01T09:55:05.557Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
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    "datePublished": "2025-10-01T09:55:05.557Z",
    "dateReserved": "2025-09-29T06:47:23.146Z",
    "dateUpdated": "2025-11-04T21:14:00.912Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-538V-3WQ9-4H3R

Vulnerability from github – Published: 2025-10-01 12:30 – Updated: 2025-11-05 20:47

Summary

Apache Pyfory python is vulnerable to deserialization of untrusted data

Details

Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pyfory"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.12.0"
            },
            {
              "fixed": "0.12.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pyfury"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.1.0"
            },
            {
              "last_affected": "0.10.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-61622"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-01T19:38:16Z",
    "nvd_published_at": "2025-10-01T10:15:34Z",
    "severity": "CRITICAL"
  },
  "details": "Deserialization of untrusted data in\u00a0python in pyfory\u00a0versions 0.12.0 through 0.12.2, or the\u00a0legacy\u00a0pyfury versions from\u00a00.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources.\u00a0An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is\u00a0vulnerable to\u00a0remote code execution.\n\nUsers are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.",
  "id": "GHSA-538v-3wq9-4h3r",
  "modified": "2025-11-05T20:47:02Z",
  "published": "2025-10-01T12:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61622"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/fory/pull/2629"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/fory/commit/379b948ecae5c3b849e5bdb3997978c9a163e40b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/fory"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/fory/releases/tag/v0.12.3"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/09/29/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Pyfory python is vulnerable to deserialization of untrusted data"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

PYSEC-2026-490

CVE-2025-61622 (GCVE-0-2025-61622)

GHSA-538V-3WQ9-4H3R

Tags

Sightings

Nomenclature

Related by attack behaviour