8.7

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

Deferred
AliasesGHSA-x94g-w73q-hpcwCGA-3j46-cx74-cxq6CGA-5f75-q476-w7q4
Published 27-10-2026Last modified 30-10-2026

Vulnerability summary

CVE-2026-116693 is a high (CVSS 8.7) vulnerability in datadog dd-trace-js. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 39% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 8.7 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
8.7/10
010
High · v4.0 (CVE.org)
EPSS score
0.45%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 27-10-2026
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

28-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard7 products
  • langfuse-3All versions (No fix recorded)
  • langfuse-3-workerAll versions (No fix recorded)
  • langfuse-4All versions (No fix recorded) | < 4.71.0-r1
  • langfuse-fips-3All versions (No fix recorded) | < 3.225.15-r1
  • langfuse-fips-3-workerAll versions (No fix recorded) | < 3.225.15-r1
Wolfi2 products
  • langfuse-3All versions (No fix recorded)
  • langfuse-3-workerAll versions (No fix recorded)
Datadog1 product
Npm1 product
  • dd-trace≥ 2.0.0, < 5.131.1 | ≥ 6.0.0, < 6.20.1

4 vendors · 11 products

References

7 links