CVE-2026-116589: Datadog dd-trace-py: IAST instrumentation can lead to application DOS
Description
Datadog dd-trace-py is the Datadog Python APM client. From 3.13.0 until 4.15.5, the IAST string-processing instrumentation does not properly handle certain internal errors while old-style % string formatting processes attacker-controlled input. An unhandled error can terminate the Python process and interrupt the work it is handling. Exploitation requires IAST to be enabled, which is not the default, and application code to apply the affected formatting operation to attacker-controlled input. This issue is fixed in version 4.15.5.
CWE-248
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
DataDog: dd-trace-py
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/DataDog/dd-trace-py/commit/69dc19853247434ceab83e0c1c4e279a2eb2a3f7 (opens in new tab)
- github.com/DataDog/dd-trace-py/commit/ace972489b57dd020ff52b706bb548a354f2dd69 (opens in new tab)
- github.com/DataDog/dd-trace-py/pull/20786 (opens in new tab)
- github.com/DataDog/dd-trace-py/pull/20823 (opens in new tab)
- github.com/DataDog/dd-trace-py/releases/tag/v4.15.5 (opens in new tab)
- github.com/DataDog/dd-trace-py/security/advisories/GHSA-p3m5-h5v9-vqj6 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)