CVE-2026-21887
OpenCTI has Semi-Blind SSRF via Unvalidated External URL in Data Ingestion Feature
7.7
HIGH
CVSS 3.1
EPSS 0.21%
描述
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.8.16, the OpenCTI platform’s data ingestion feature accepts user-supplied URLs without validation and uses the Axios HTTP client with its default configuration (allowAbsoluteUrls: true). This allows attackers to craft requests to arbitrary endpoints, including internal services, because Axios will accept and process absolute URLs. This results in a semi-blind SSRF, as responses may not be fully visible but can still impact internal systems. This vulnerability is fixed in 6.8.16.
如何修補 CVE-2026-21887
要修補 CVE-2026-21887,請將受影響套件升級到下列已修補版本。
- —升級至 6.8.16 或更新版本
- —升級至 6.8.16 或更新版本
CVE-2026-21887 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 6.8.16
- from 0, < 6.8.16
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |