Datadog dd-trace-py CVE-2026-116589 漏洞：IAST 可能導致應用程式 DOS
CVE-2026-116589 - Datadog dd-trace-py: IAST instrumentation can lead to application DOS
Datadog dd-trace-py 在 3.13.0 至 4.15.5 版本中，IAST 字串處理在舊式 % 格式化遇到攻擊者輸入時未正確處理內部錯誤，可能導致 Python 程序終止，進而造成服務中斷。
此漏洞若未升級至 4.15.5，啟用 IAST 且處理攻擊者輸入的舊式 % 字串格式化時，可能導致 Python 程序終止，進而造成服務中斷，建議即時升級至 4.15.5 並避免使用 % 格式化，或停用 IAST 以降低風險，並監控應用狀態以確保服務正常運作。
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.
Impact
Affected Products
The following products are affected by CVE-2026-116589
vulnerability.
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The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | [email protected] |
Update Datadog dd-trace-py to version 4.15.5 or later to fix a process termination vulnerability.
- Update dd-trace-py to version 4.15.5 or later.
- Ensure IAST is enabled if it is required.
- Avoid formatting attacker-controlled input using %.
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While CVE identifies
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The following table lists the changes that have been made to the
CVE-2026-116589 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
十月. 26, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-248 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/116xxx/CVE-2026-116589.json">CVE-2026-116589</a> Added Reference https://github.com/DataDog/dd-trace-py/commit/69dc19853247434ceab83e0c1c4e279a2eb2a3f7 Added Reference https://github.com/DataDog/dd-trace-py/commit/ace972489b57dd020ff52b706bb548a354f2dd69 Added Reference https://github.com/DataDog/dd-trace-py/pull/20786 Added Reference https://github.com/DataDog/dd-trace-py/pull/20823 Added Reference https://github.com/DataDog/dd-trace-py/releases/tag/v4.15.5 Added Reference https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-p3m5-h5v9-vqj6
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.