Common Weakness Enumeration

CWE-502

Allowed

Deserialization of Untrusted Data

Abstraction: Base · Status: Draft

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

4797 vulnerabilities reference this CWE, most recent first.

GHSA-2Q44-4F66-XM86

Vulnerability from github – Published: 2026-03-05 06:30 – Updated: 2026-03-05 21:30
VLAI
Details

Deserialization of Untrusted Data vulnerability in ThemeREX Pizza House pizzahouse allows Object Injection.This issue affects Pizza House: from n/a through <= 1.4.0.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-28074"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-05T06:16:41Z",
    "severity": "CRITICAL"
  },
  "details": "Deserialization of Untrusted Data vulnerability in ThemeREX Pizza House pizzahouse allows Object Injection.This issue affects Pizza House: from n/a through \u003c= 1.4.0.",
  "id": "GHSA-2q44-4f66-xm86",
  "modified": "2026-03-05T21:30:43Z",
  "published": "2026-03-05T06:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28074"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Theme/pizzahouse/vulnerability/wordpress-pizza-house-theme-1-4-0-php-object-injection-vulnerability?_s_id=cve"
    }
  ],
  "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"
    }
  ]
}

GHSA-2Q4V-RWHP-9RXJ

Vulnerability from github – Published: 2024-09-10 18:30 – Updated: 2024-09-10 18:30
VLAI
Details

Microsoft SharePoint Server Remote Code Execution Vulnerability

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-43464"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-10T17:15:33Z",
    "severity": "HIGH"
  },
  "details": "Microsoft SharePoint Server Remote Code Execution Vulnerability",
  "id": "GHSA-2q4v-rwhp-9rxj",
  "modified": "2024-09-10T18:30:47Z",
  "published": "2024-09-10T18:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43464"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43464"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2Q7C-5GJM-7Q23

Vulnerability from github – Published: 2026-06-10 00:31 – Updated: 2026-06-10 00:31
VLAI
Details

An attacker with write permissions to the database table managed by JdbcAssertingPartyMetadataRepository (saml2_asserting_party_metadata) may be able to store malicious serialized payloads in the columns containing the collection of verification or encryption credentials (verification_credentials and encryption_credentials, respectively).

Affected versions: Spring Security 7.0.0 through 7.0.5.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-40993"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-10T00:16:50Z",
    "severity": "HIGH"
  },
  "details": "An attacker with write permissions to the database table managed by JdbcAssertingPartyMetadataRepository (saml2_asserting_party_metadata) may be able to store malicious serialized payloads in the columns containing the collection of verification or encryption credentials (verification_credentials and encryption_credentials, respectively).\n\nAffected versions:\nSpring Security 7.0.0 through 7.0.5.",
  "id": "GHSA-2q7c-5gjm-7q23",
  "modified": "2026-06-10T00:31:51Z",
  "published": "2026-06-10T00:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40993"
    },
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-40993"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2Q8X-2P7F-574V

Vulnerability from github – Published: 2021-08-25 14:46 – Updated: 2022-02-08 20:43
VLAI
Summary
XStream is vulnerable to an Arbitrary Code Execution attack
Details

Impact

The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream, if using the version out of the box with Java runtime version 14 to 8 or with JavaFX installed. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.

Patches

XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

Workarounds

See workarounds for the different versions covering all CVEs.

References

See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for CVE-2021-39153.

Credits

Ceclin and YXXX from the Tencent Security Response Center found and reported the issue to XStream and provided the required information to reproduce it.

For more information

If you have any questions or comments about this advisory: * Open an issue in XStream * Contact us at XStream Google Group

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.thoughtworks.xstream:xstream"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-39153"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-23T18:22:32Z",
    "nvd_published_at": "2021-08-23T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nThe vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream, if using the version out of the box with Java runtime version 14 to 8 or with JavaFX installed. No user is affected, who followed the recommendation to setup XStream\u0027s security framework with a whitelist limited to the minimal required types.\n\n### Patches\nXStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.\n\n### Workarounds\nSee [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs.\n\n### References\nSee full information about the nature of the vulnerability and the steps to reproduce it in XStream\u0027s documentation for [CVE-2021-39153](https://x-stream.github.io/CVE-2021-39153.html).\n\n### Credits\nCeclin and YXXX from the Tencent Security Response Center found and reported the issue to XStream and provided the required information to reproduce it.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [XStream](https://github.com/x-stream/xstream/issues)\n* Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user)\n",
  "id": "GHSA-2q8x-2p7f-574v",
  "modified": "2022-02-08T20:43:56Z",
  "published": "2021-08-25T14:46:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/x-stream/xstream/security/advisories/GHSA-2q8x-2p7f-574v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39153"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/x-stream/xstream"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210923-0003"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-5004"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    },
    {
      "type": "WEB",
      "url": "https://x-stream.github.io/CVE-2021-39153.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "XStream is vulnerable to an Arbitrary Code Execution attack"
}

GHSA-2QJP-9769-4MQ4

Vulnerability from github – Published: 2025-04-24 18:31 – Updated: 2026-04-01 18:34
VLAI
Details

Deserialization of Untrusted Data vulnerability in Michael Cannon Flickr Shortcode Importer allows Object Injection. This issue affects Flickr Shortcode Importer: from n/a through 2.2.3.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-46481"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-24T16:15:39Z",
    "severity": "HIGH"
  },
  "details": "Deserialization of Untrusted Data vulnerability in Michael Cannon Flickr Shortcode Importer allows Object Injection. This issue affects Flickr Shortcode Importer: from n/a through 2.2.3.",
  "id": "GHSA-2qjp-9769-4mq4",
  "modified": "2026-04-01T18:34:57Z",
  "published": "2025-04-24T18:31:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-46481"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/wordpress/plugin/flickr-shortcode-importer/vulnerability/wordpress-flickr-shortcode-importer-2-2-3-php-object-injection-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2QRG-X229-3V8Q

Vulnerability from github – Published: 2020-01-06 18:43 – Updated: 2026-06-09 10:22
VLAI
Summary
Deserialization of Untrusted Data in Log4j
Details

Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions 1.2 up to 1.2.17.

Users are advised to migrate to org.apache.logging.log4j:log4j-core.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "log4j:log4j"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.2"
            },
            {
              "last_affected": "1.2.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.zenframework.z8.dependencies.commons:log4j-1.2.17"
      },
      "versions": [
        "2.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2019-17571"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2019-12-27T22:02:37Z",
    "nvd_published_at": "2019-12-20T17:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions 1.2 up to 1.2.17.\n\nUsers are advised to migrate to `org.apache.logging.log4j:log4j-core`.",
  "id": "GHSA-2qrg-x229-3v8q",
  "modified": "2026-06-09T10:22:26Z",
  "published": "2020-01-06T18:43:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17571"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/ra54fa49be3e773d99ccc9c2a422311cf77e3ecd3b8594ee93043a6b1@%3Cdev.zookeeper.apache.org%3E"
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      "url": "https://lists.apache.org/thread.html/ra9611a8431cb62369bce8909d7645597e1dd45c24b448836b1e54940%40%3Cissues.bookkeeper.apache.org%3E"
    },
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      "url": "https://lists.apache.org/thread.html/ra9611a8431cb62369bce8909d7645597e1dd45c24b448836b1e54940@%3Cissues.bookkeeper.apache.org%3E"
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    },
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    },
    {
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      "url": "https://lists.apache.org/thread.html/r681b4432d0605f327b68b9f8a42662993e699d04614de4851c35ffd1@%3Cdev.tika.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r696507338dd5f44efc23d98cafe30f217cf3ba78e77ed1324c7a5179%40%3Cjira.kafka.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r696507338dd5f44efc23d98cafe30f217cf3ba78e77ed1324c7a5179@%3Cjira.kafka.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00022.html"
    }
  ],
  "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": "Deserialization of Untrusted Data in Log4j"
}

GHSA-2QW8-PPR5-M96C

Vulnerability from github – Published: 2024-10-31 12:30 – Updated: 2025-02-11 19:01
VLAI
Summary
Apache Lucene.Net.Replicator Deserialization of Untrusted Data vulnerability
Details

Deserialization of Untrusted Data vulnerability in Apache Lucene.Net.Replicator.

This issue affects Apache Lucene.NET's Replicator library: from 4.8.0-beta00005 through 4.8.0-beta00016.

An attacker that can intercept traffic between a replication client and server, or control the target replication node URL, can provide a specially-crafted JSON response that is deserialized as an attacker-provided exception type. This can result in remote code execution or other potential unauthorized access.

Users are recommended to upgrade to version 4.8.0-beta00017, which fixes the issue.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Lucene.Net.Replicator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.8.0-beta00005"
            },
            {
              "fixed": "4.8.0-beta00017"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-43383"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-10-31T15:01:08Z",
    "nvd_published_at": "2024-10-31T10:15:04Z",
    "severity": "HIGH"
  },
  "details": "Deserialization of Untrusted Data vulnerability in Apache Lucene.Net.Replicator.\n\nThis issue affects Apache Lucene.NET\u0027s Replicator library: from 4.8.0-beta00005 through 4.8.0-beta00016.\n\nAn attacker that can intercept traffic between a replication client and server, or control the target replication node URL, can provide a specially-crafted JSON response that is deserialized as an attacker-provided exception type. This can result in remote code execution or other potential unauthorized access.\n\nUsers are recommended to upgrade to version 4.8.0-beta00017, which fixes the issue.",
  "id": "GHSA-2qw8-ppr5-m96c",
  "modified": "2025-02-11T19:01:31Z",
  "published": "2024-10-31T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43383"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/lucenenet/commit/1f61dd0fdb465e17141a79d22eb2f2bc02059acc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/lucenenet"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/wlz1p76dxpt4rl9o29voxjd5zl7717nh"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/10/31/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Apache Lucene.Net.Replicator Deserialization of Untrusted Data vulnerability"
}

GHSA-2QWQ-GQPM-Q83G

Vulnerability from github – Published: 2022-05-24 22:01 – Updated: 2025-10-22 00:32
VLAI
Summary
Rails is bad
Details

Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-26857"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502",
      "CWE-506"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-03T00:15:00Z",
    "severity": "HIGH"
  },
  "details": "Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.",
  "id": "GHSA-2qwq-gqpm-q83g",
  "modified": "2025-10-22T00:32:04Z",
  "published": "2022-05-24T22:01:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26857"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26857"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26857"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Rails is bad"
}

GHSA-2R4X-667F-MPFH

Vulnerability from github – Published: 2025-03-20 09:30 – Updated: 2026-03-27 15:06
VLAI
Summary
Apache Seata Vulnerable to Deserialization of Untrusted Data
Details

Deserialization of Untrusted Data vulnerability in Apache Seata (incubating).

This issue affects Apache Seata (incubating): from 2.0.0 before 2.2.0.

Users are recommended to upgrade to version 2.2.0, which fixes the issue.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.seata:seata-config-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-47552"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-20T18:24:23Z",
    "nvd_published_at": "2025-03-20T09:15:12Z",
    "severity": "LOW"
  },
  "details": "Deserialization of Untrusted Data vulnerability in Apache Seata (incubating).\n\nThis issue affects Apache Seata (incubating): from 2.0.0 before 2.2.0.\n\nUsers are recommended to upgrade to version 2.2.0, which fixes the issue.",
  "id": "GHSA-2r4x-667f-mpfh",
  "modified": "2026-03-27T15:06:59Z",
  "published": "2025-03-20T09:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47552"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/incubator-seata/commit/20cd9625d23f99b71fefc83b8db96c14092a9950"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/incubator-seata"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/incubator-seata/releases/tag/v2.2.0"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/652o82vzk9qrtgksk55cfgpbvdgtkch0"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/03/19/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Apache Seata Vulnerable to Deserialization of Untrusted Data"
}

GHSA-2R5M-76WX-56GX

Vulnerability from github – Published: 2026-06-01 09:31 – Updated: 2026-07-09 21:00
VLAI
Summary
Apache Airflow Vulnerable to Deserialization of Untrusted Data
Details

Apache Airflow's scheduler-side deadline-reference decoder (SerializedCustomReference.deserialize_reference) imported and dispatched arbitrary class paths drawn from DAG-author-controlled serialized state without an allowlist or plugin-registry gate. A DAG author whose code reaches the scheduler — the default on single-host deployments where the DAG bundle is importable from the scheduler process — could embed a custom DeadlineReference whose serialized form named an attacker-controlled module path, causing the scheduler to import_string(...) and instantiate that class with a live SQLAlchemy session attached. Affects deployments where DAG-author code is less trusted than the scheduler process. Users are advised to upgrade to apache-airflow 3.2.2 or later.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "apache-airflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45360"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-09T21:00:55Z",
    "nvd_published_at": "2026-06-01T09:16:19Z",
    "severity": "HIGH"
  },
  "details": "Apache Airflow\u0027s scheduler-side deadline-reference decoder (`SerializedCustomReference.deserialize_reference`) imported and dispatched arbitrary class paths drawn from DAG-author-controlled serialized state without an allowlist or plugin-registry gate. A DAG author whose code reaches the scheduler \u2014 the default on single-host deployments where the DAG bundle is importable from the scheduler process \u2014 could embed a custom `DeadlineReference` whose serialized form named an attacker-controlled module path, causing the scheduler to `import_string(...)` and instantiate that class with a live SQLAlchemy session attached. Affects deployments where DAG-author code is less trusted than the scheduler process. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.",
  "id": "GHSA-2r5m-76wx-56gx",
  "modified": "2026-07-09T21:00:55Z",
  "published": "2026-06-01T09:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45360"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/airflow/pull/66737"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/airflow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-186.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/q227dghjwgfz8xsxrf2pwpz4wk43zm83"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/31/12"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Airflow Vulnerable to Deserialization of Untrusted Data"
}

Mitigation
Architecture and Design Implementation

If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.

Mitigation
Implementation

When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.

Mitigation
Implementation

Explicitly define a final object() to prevent deserialization.

Mitigation
Architecture and Design Implementation
  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
Mitigation
Implementation

Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.

Mitigation
Architecture and Design Implementation

Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.

Mitigation MIT-29
Operation

Strategy: Firewall

Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

CAPEC-586: Object Injection

An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.