CVE-2026-116588

Description

Datadog dd-trace-py is the Datadog Python APM client. From 1.5.0 until 3.19.9 and 4.15.6, the default query-string obfuscation regular expression can exhibit excessive backtracking while synchronously processing attacker-controlled URL query strings for HTTP span metadata. A remote attacker can cause prolonged CPU consumption, request latency, and service unavailability in affected HTTP tracing integrations that include query strings in URL span tags. The vulnerable processing is enabled by default for those integrations. This issue is fixed in versions 3.19.9 and 4.15.6.

References

https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-3633-r77q-h3v3

https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.6

https://github.com/DataDog/dd-trace-py/releases/tag/v3.19.9

https://github.com/DataDog/dd-trace-py/pull/20880

https://github.com/DataDog/dd-trace-py/pull/20862

https://github.com/DataDog/dd-trace-py/pull/20857

https://github.com/DataDog/dd-trace-py/commit/a6d73607ea45ecd67152630f64b0945556972ed8

https://github.com/DataDog/dd-trace-py/commit/83ea39845dd95bfb9b8e247c62b3d22fc5dce1ce

https://github.com/DataDog/dd-trace-py/commit/63ddc3cb07d8813ded7a8b3ab5b8d0f5470e4bfd

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110469

Details

Source: Mitre, NVD

Named Vulnerability: GHSA-3633-r77q-h3v3

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS