Datadog dd-trace-py: ReDOS in URL query string obfuscation
Exact source revision recorded 26 Oct 2026 22:35:30 UTC. It does not establish the source's current position. Latest evidence.
cve-program · CVE-2026-116588
PublishedDatadog 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.
- Source published
- 26 Oct 2026 21:22:46 UTC
- Source modified
- 26 Oct 2026 21:22:46 UTC
- Observed here
- 26 Oct 2026 22:35:30 UTC
- Source terms
- CVE Program Terms of Use
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CVSS 4.0 · 8.7 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