Vulnerability-Lookup

CVE-2026-50270 (GCVE-0-2026-50270)

Vulnerability from cvelistv5 – Published: 2026-09-14 17:03 – Updated: 2026-09-14 19:16

Title

dd-trace-java: Improper parsing of W3C baggage headers may lead to DoS

Summary

dd-trace-java is a Datadog APM client for Java. Prior to 1.62.0, W3C baggage extraction does not enforce DD_TRACE_BAGGAGE_MAX_ITEMS, which defaults to 64, or DD_TRACE_BAGGAGE_MAX_BYTES, which defaults to 8192, although those limits apply during baggage injection. A remote unauthenticated attacker can send a baggage HTTP header containing many comma-separated key-value pairs or a single very large value. The extraction path allocates map entries while parsing the attacker-controlled header on every request, causing unbounded CPU and memory consumption in an HTTP service where the baggage propagation style is enabled, which is the default for most affected tracers. This can cause denial of service. This issue is fixed in version 1.62.0.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 19:16 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/DataDog/dd-trace-java/security…	x_refsource_CONFIRM
https://github.com/DataDog/dd-trace-java/pull/11265	x_refsource_MISC
https://github.com/DataDog/dd-trace-java/commit/1…	x_refsource_MISC
https://github.com/DataDog/dd-trace-java/releases…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version	CPE status
DataDog	dd-trace-java	Affected: < 1.62.0	guessed
com.datadoghq	dd-java-agent	Affected: < 1.62.0	guessed

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-50270",
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FKIE_CVE-2026-50270

Vulnerability from fkie_nvd - Published: 2026-09-14 18:17 - Updated: 2026-09-14 20:16

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/DataDog/dd-trace-java/commit/16c6a5fd1fed71cef6c35f69122f19f5ee242757
	security-advisories@github.com	https://github.com/DataDog/dd-trace-java/pull/11265
	security-advisories@github.com	https://github.com/DataDog/dd-trace-java/releases/tag/v1.62.0
	security-advisories@github.com	https://github.com/DataDog/dd-trace-java/security/advisories/GHSA-74xj-wh4w-vqxc

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "dd-trace-java",
          "vendor": "DataDog",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.62.0"
            }
          ]
        },
        {
          "product": "dd-java-agent",
          "vendor": "com.datadoghq",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.62.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "dd-trace-java is a Datadog APM client for Java. Prior to 1.62.0, W3C baggage extraction does not enforce DD_TRACE_BAGGAGE_MAX_ITEMS, which defaults to 64, or DD_TRACE_BAGGAGE_MAX_BYTES, which defaults to 8192, although those limits apply during baggage injection. A remote unauthenticated attacker can send a baggage HTTP header containing many comma-separated key-value pairs or a single very large value. The extraction path allocates map entries while parsing the attacker-controlled header on every request, causing unbounded CPU and memory consumption in an HTTP service where the baggage propagation style is enabled, which is the default for most affected tracers. This can cause denial of service. This issue is fixed in version 1.62.0."
    }
  ],
  "id": "CVE-2026-50270",
  "lastModified": "2026-09-14T20:16:45.143",
  "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
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  "references": [
    {
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    },
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}

GHSA-74XJ-WH4W-VQXC

Vulnerability from github – Published: 2026-07-15 22:53 – Updated: 2026-07-15 22:53

Summary

dd-trace-java: Improper parsing of W3C baggage headers may lead to DoS

Details

Impact

Datadog tracing libraries that implement W3C baggage propagation parse incoming baggage HTTP headers without enforcing item-count or byte-size limits on the extract path. The DD_TRACE_BAGGAGE_MAX_ITEMS (default 64) and DD_TRACE_BAGGAGE_MAX_BYTES (default 8192) limits were applied only to baggage injection, not extraction. A remote, unauthenticated attacker can send a request whose baggage header contains an arbitrarily large number of comma-separated key-value pairs (or a single very large value). The tracer allocates a hash-map entry for each pair on every request, causing unbounded CPU and memory consumption and enabling a remote Denial of Service against any HTTP service that has the baggage propagation style enabled. The baggage propagation style is enabled by default in most affected tracers, so any internet-facing service that has been instrumented with an affected tracer version is exposed unless the propagation style has been explicitly narrowed.

Patches

This is resolved in version 1.62.0 and later of the dd-trace-java library.

Workarounds

If users cannot upgrade immediately: 1. Disable baggage extraction by removing baggage from DD_TRACE_PROPAGATION_STYLE (or DD_TRACE_PROPAGATION_STYLE_EXTRACT if set independently). 2. Cap the maximum HTTP request header size at an upstream proxy or web server (for example, Apache LimitRequestFieldSize, Nginx large_client_header_buffers, Envoy max_request_headers_kb).

Resources

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.datadoghq:dd-java-agent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.62.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50270"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-15T22:53:16Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nDatadog tracing libraries that implement W3C baggage propagation parse incoming baggage HTTP headers without enforcing item-count or byte-size limits on the extract path. The DD_TRACE_BAGGAGE_MAX_ITEMS (default 64) and DD_TRACE_BAGGAGE_MAX_BYTES (default 8192) limits were applied only to baggage injection, not extraction. A remote, unauthenticated attacker can send a request whose baggage header contains an arbitrarily large number of comma-separated key-value pairs (or a single very large value). The tracer allocates a hash-map entry for each pair on every request, causing unbounded CPU and memory consumption and enabling a remote Denial of Service against any HTTP service that has the baggage propagation style enabled. The baggage propagation style is enabled by default in most affected tracers, so any internet-facing service that has been instrumented with an affected tracer version is exposed unless the propagation style has been explicitly narrowed.\n\n\n### Patches\nThis is resolved in version 1.62.0 and later of the `dd-trace-java` library.\n\n### Workarounds\nIf users cannot upgrade immediately:\n1. Disable `baggage` extraction by removing `baggage` from `DD_TRACE_PROPAGATION_STYLE` (or `DD_TRACE_PROPAGATION_STYLE_EXTRACT` if set independently).\n2. Cap the maximum HTTP request header size at an upstream proxy or web server (for example, Apache `LimitRequestFieldSize`, Nginx `large_client_header_buffers`, Envoy `max_request_headers_kb`).\n\n\n### Resources\nRelated upstream advisories:\n[opentelemetry-go GHSA-mh2q-q3fh-2475](https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475)\n[opentelemetry-dotnet GHSA-g94r-2vxg-569j](https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j)",
  "id": "GHSA-74xj-wh4w-vqxc",
  "modified": "2026-07-15T22:53:16Z",
  "published": "2026-07-15T22:53:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/dd-trace-java/security/advisories/GHSA-74xj-wh4w-vqxc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DataDog/dd-trace-java"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "dd-trace-java: Improper parsing of W3C baggage headers may lead to DoS"
}

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.

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.

Action not permitted

CVE-2026-50270 (GCVE-0-2026-50270)

FKIE_CVE-2026-50270

GHSA-74XJ-WH4W-VQXC

Impact

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Resources

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Sightings

Nomenclature