Vulnerability · Published Oct 27, 2026 · Assigned by GitHub_M
CVE-2026-116693dd-trace: ReDOS in URL query string obfuscation
High 8.7
In plain English
A high-severity regular-expression denial of service in dd-trace-js from DataDog. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | dd-trace | 5.131.1 | GHSA-x94g-w73q-hpcw |
| npm | dd-trace | 6.20.1 | GHSA-x94g-w73q-hpcw |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| DataDog | dd-trace-js | >= 2.0.0, < 5.131.1>= 6.0.0, < 6.20.1 |
Weakness: CWE-1333 · Vector: 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
References
- https://github.com/DataDog/dd-trace-js/security/advisories/GHSA-x94g-w73q-hpcw x_refsource_CONFIRM
- https://github.com/DataDog/dd-trace-js/pull/10675 x_refsource_MISC
- https://github.com/DataDog/dd-trace-js/commit/5eeee790c93036a50549056fc890028cb4c86b1b x_refsource_MISC
- https://github.com/DataDog/dd-trace-js/commit/cf4e68a45fa1442c9850f2086c81901258e821b8 x_refsource_MISC
- https://github.com/DataDog/dd-trace-js/releases/tag/v5.131.1 x_refsource_MISC
- https://github.com/DataDog/dd-trace-js/releases/tag/v6.20.1 x_refsource_MISC