CVE-2026-54788Network attack vector

Unauthenticated service interruption via unbounded tracestate parsing

Published Aug 28, 2026 · Updated Aug 28, 2026

Resource exhaustion in Datadog dd-trace-rs 0.1.0 through 0.3.2 allows remote attackers to interrupt instrumented network services. The tracecontext parser splits every key-value pair in an attacker-controlled dd= tracestate member and collects the results into a HashMap without pair-count or entry-size limits. Unauthenticated network requests reach this parser by default, allowing repeated oversized headers to consume excessive CPU and memory without affecting confidentiality or integrity.

CVSS severity7.5
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Datadog dd-trace-rs 0.1.0 through 0.3.2 allows remote attackers to interrupt instrumented network services. The tracecontext parser splits every key-value pair in an attacker-controlled dd= tracestate member and collects the results into a HashMap without pair-count or entry-size limits. Unauthenticated network requests reach this parser by default, allowing repeated oversized headers to consume excessive CPU and memory without affecting confidentiality or integrity.

The record

CVE
CVE-2026-54788
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
Datadog
Product
dd-trace-rs
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.1.0, < 0.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Datadog · dd-trace-rsversion=>= 0.1.0, < 0.3.3

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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