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CVE-2026-116693— dd-trace: ReDOS in URL query string obfuscation

Quick assessment

Affected
DataDog dd-trace-js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dd-trace 是 Datadog APM 的 Node.js 客户端。在版本 2.0.0 至 5.131.1 和 6.20.1 之间，默认的 正则表达式在处理由攻击者控制的 URL 查询字符串时，可能引发过度的回溯（backtracking）。该表达式在记录 HTTP URL 元数据时以同步方式执行，因此攻击者可构造恶意请求，导致 CPU 资源被过度消耗、请求处理停滞，最终使被监控的应用不可用。此问题已在版本 5.131.1 和 6.20.1 中修复。

CVSS 8.7 · High EPSS 0.45% · P39

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood

Affected Version Matrix 2

VendorProduct Version RangeStatus
DataDog dd-trace-js >= 2.0.0, < 5.131.1 affected
>= 6.0.0, < 6.20.1 affected
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I. Basic Information for CVE-2026-116693

Vulnerability Information
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Vulnerability Title
dd-trace: ReDOS in URL query string obfuscation
Source: CVE Program / CVE List V5
Vulnerability Description
dd-trace is the Datadog APM client for Node.js. From 2.0.0 until 5.131.1 and 6.20.1, the default DD_TRACE_OBFUSCATION_QUERY_STRING_REGEXP can perform excessive backtracking on attacker-controlled URL query strings. The expression is applied synchronously while recording HTTP URL metadata, allowing a crafted request to consume excessive CPU, stall request processing, and make the instrumented application unavailable. This issue is fixed in versions 5.131.1 and 6.20.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
DataDog dd-trace-js >= 2.0.0, < 5.131.1 -

II. Public POCs for CVE-2026-116693

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-116693

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Patches & Fixes for CVE-2026-116693 (3)

Vendor Advisories for CVE-2026-116693 (1)

Vendor Pages for CVE-2026-116693 (2)

IV. Related Vulnerabilities

Same product: dd-trace-js
Same vendor: DataDog
Same weakness: CWE-1333