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CVE-2026-54788 high CVSS 7.5

Vulnerability in datadog-opentelemetry (CVE-2026-54788)

Summary

Vulnerability in datadog-opentelemetry (CVE-2026-54788). Risk of unauthorized operations or information disclosure. Exploitable via tracecontext. Mitigation: upgrade to 0.3.3 or later.

Original description

The description as published by the source.

Impact

Datadog tracing libraries that implement W3C Trace Context (tracecontext) propagation parse the incoming tracestate header without enforcing a size cap on the Datadog vendor entry (dd=...). The dd= value contains semicolon-separated key:value pairs, and the parser allocates a hash-map entry for each pair. A remote, unauthenticated attacker can send a tracestate header whose dd= member is arbitrarily large (or contains an arbitrarily large number of pairs), forcing unbounded CPU and memory consumption per request and enabling a remote Denial of Service. tracecontext extraction is enabled by default in affected tracers, so any internet-facing service instrumented with an affected version is exposed unless tracecontext has been explicitly removed from the propagation style configuration.

Patches

This is resolved in version 0.3.3 and later of the dd-trace-rs library.

Workarounds

If you cannot upgrade immediately:

  1. Disable tracecontext extraction by setting DD_TRACE_PROPAGATION_STYLE_EXTRACT to a value that does not include tracecontext (for example, datadog).
  2. Cap the maximum HTTP request header size at an upstream proxy or web server.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-54788 has been found in datadog-opentelemetry.
Attackers can target a specific entry point like tracecontext over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: upgrade datadog-opentelemetry to 0.3.3 or later.
If unsure, ask your IT team or search "datadog-opentelemetry CVE-2026-54788" on the vendor's site.

CVE-2026-54788 (datadog-opentelemetry) — CWE-770 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: tracecontext / tracestate / DD_TRACE_PROPAGATION_STYLE_EXTRACT / datadog
Patched: 0.3.3 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-770) exists in datadog-opentelemetry. Attackers reach the vulnerable code path via tracecontext without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of datadog-opentelemetry. Attack surface: tracecontext / tracestate / DD_TRACE_PROPAGATION_STYLE_EXTRACT / datadog.

🔥 Severity

Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 0.3.3.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'datadog-opentelemetry' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'datadog-opentelemetry' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で datadog-opentelemetry を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade datadog-opentelemetry to 0.3.3

    ステージング環境で 0.3.3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

rust datadog-opentelemetry
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.3"}]}]
crates.io datadog-opentelemetry
[{"type":"SEMVER","events":[{"introduced":"0.1.0"},{"fixed":"0.3.3"}]}]

References

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