Vulnerability-Lookup

GHSA-P3M5-H5V9-VQJ6

Vulnerability from github – Published: 2026-10-27 15:37 – Updated: 2026-10-27 15:37

Summary

Datadog dd-trace-py: IAST instrumentation can lead to application DOS

Details

Summary

A flaw in dd-trace-py’s IAST instrumentation can cause the Python application process to terminate unexpectedly when processing certain attacker-controlled input. Only applications with IAST enabled are affected. IAST is disabled by default.

Details

The affected IAST string-processing instrumentation does not properly handle certain internal errors, allowing an error to terminate the application process. Exploitation requires IAST to be enabled and application code to perform an affected string-processing operation on attacker-controlled input.

If you are unable to upgrade to a patched version of dd-trace-py, you can mitigate this issue by either disabling IAST (setting DD_IAST_ENABLED=false) or by replacing replace % string interpolations with str.format or f-strings for user inputs in your monitored application.

Proof of concept

Detailed triggering inputs and reproduction steps are omitted from this advisory. The linked fix (#20786) includes regression coverage for the affected behavior.

Impact

Denial of service affecting applications that use a vulnerable version of dd-trace-py with IAST enabled and expose the affected operation to attacker-controlled input. Successful exploitation terminates the affected Python process and interrupts the work it is handling.

Severity

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ddtrace"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.13.0"
            },
            {
              "fixed": "4.15.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-116589"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-248"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-27T15:37:24Z",
    "nvd_published_at": "2026-10-26T22:16:55Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nA flaw in dd-trace-py\u2019s IAST instrumentation can cause the Python application process to terminate unexpectedly when processing certain attacker-controlled input. Only applications with IAST enabled are affected. IAST is disabled by default.\n\n### Details\n\nThe affected IAST string-processing instrumentation does not properly handle certain internal errors, allowing an error to terminate the application process. Exploitation requires IAST to be enabled and application code to perform an affected string-processing operation on attacker-controlled input.\n\nIf you are unable to upgrade to a patched version of dd-trace-py, you can mitigate this issue by either disabling IAST (setting DD_IAST_ENABLED=false) or by replacing replace % string interpolations with str.format or f-strings for user inputs in your monitored application.\n\n### Proof of concept\n\nDetailed triggering inputs and reproduction steps are omitted from this advisory. The linked fix (#20786) includes regression coverage for the affected behavior.\n\n### Impact\n\nDenial of service affecting applications that use a vulnerable version of dd-trace-py with IAST enabled and expose the affected operation to attacker-controlled input. Successful exploitation terminates the affected Python process and interrupts the work it is handling.",
  "id": "GHSA-p3m5-h5v9-vqj6",
  "modified": "2026-10-27T15:37:24Z",
  "published": "2026-10-27T15:37:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-p3m5-h5v9-vqj6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116589"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-py/pull/20786"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-py/pull/20823"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-py/commit/69dc19853247434ceab83e0c1c4e279a2eb2a3f7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-py/commit/ace972489b57dd020ff52b706bb548a354f2dd69"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DataDog/dd-trace-py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Datadog dd-trace-py: IAST instrumentation can lead to application DOS"
}

CVE-2026-116589 (GCVE-0-2026-116589)

Vulnerability from cvelistv5 – Published: 2026-10-26 21:26 – Updated: 2026-10-26 21:26

Title

Datadog dd-trace-py: IAST instrumentation can lead to application DOS

Summary

Datadog dd-trace-py is the Datadog Python APM client. From 3.13.0 until 4.15.5, the IAST string-processing instrumentation does not properly handle certain internal errors while old-style % string formatting processes attacker-controlled input. An unhandled error can terminate the Python process and interrupt the work it is handling. Exploitation requires IAST to be enabled, which is not the default, and application code to apply the affected formatting operation to attacker-controlled input. This issue is fixed in version 4.15.5.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CWE

CWE-248 - Uncaught Exception

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 8129 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/DataDog/dd-trace-py/security/a…	x_refsource_CONFIRM
https://github.com/DataDog/dd-trace-py/pull/20786	x_refsource_MISC
https://github.com/DataDog/dd-trace-py/pull/20823	x_refsource_MISC
https://github.com/DataDog/dd-trace-py/commit/69d…	x_refsource_MISC
https://github.com/DataDog/dd-trace-py/commit/ace…	x_refsource_MISC
https://github.com/DataDog/dd-trace-py/releases/t…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
DataDog	dd-trace-py	Affected: >= 3.13.0, < 4.15.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "dd-trace-py",
          "vendor": "DataDog",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.13.0, \u003c 4.15.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Datadog dd-trace-py is the Datadog Python APM client. From 3.13.0 until 4.15.5, the IAST string-processing instrumentation does not properly handle certain internal errors while old-style % string formatting processes attacker-controlled input. An unhandled error can terminate the Python process and interrupt the work it is handling. Exploitation requires IAST to be enabled, which is not the default, and application code to apply the affected formatting operation to attacker-controlled input. This issue is fixed in version 4.15.5."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-248",
              "description": "CWE-248: Uncaught Exception",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-26T21:26:58.832Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-p3m5-h5v9-vqj6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-p3m5-h5v9-vqj6"
        },
        {
          "name": "https://github.com/DataDog/dd-trace-py/pull/20786",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/DataDog/dd-trace-py/pull/20786"
        },
        {
          "name": "https://github.com/DataDog/dd-trace-py/pull/20823",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/DataDog/dd-trace-py/pull/20823"
        },
        {
          "name": "https://github.com/DataDog/dd-trace-py/commit/69dc19853247434ceab83e0c1c4e279a2eb2a3f7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/DataDog/dd-trace-py/commit/69dc19853247434ceab83e0c1c4e279a2eb2a3f7"
        },
        {
          "name": "https://github.com/DataDog/dd-trace-py/commit/ace972489b57dd020ff52b706bb548a354f2dd69",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/DataDog/dd-trace-py/commit/ace972489b57dd020ff52b706bb548a354f2dd69"
        },
        {
          "name": "https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.5"
        }
      ],
      "source": {
        "advisory": "GHSA-p3m5-h5v9-vqj6",
        "discovery": "UNKNOWN"
      },
      "title": "Datadog dd-trace-py: IAST instrumentation can lead to application DOS"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-116589",
    "datePublished": "2026-10-26T21:26:58.832Z",
    "dateReserved": "2026-10-26T15:03:39.036Z",
    "dateUpdated": "2026-10-26T21:26:58.832Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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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.
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GHSA-P3M5-H5V9-VQJ6

Summary

Details

Proof of concept

Impact

CVE-2026-116589 (GCVE-0-2026-116589)

Tags

Sightings

Nomenclature

Vulnerability timeline

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