CVE-2026-1577— IBM® Db2® is vulnerable to a denial of service with a specially crafted query involving multiple subqueries
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I. Basic Information for CVE-2026-1577
Vulnerability Information
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Vulnerability Title
IBM® Db2® is vulnerable to a denial of service with a specially crafted query involving multiple subqueries
Source: NVD (National Vulnerability Database)
Vulnerability Description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in data query logic.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
IBM Db2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Db2是美国国际商业机器（IBM）公司的一套关系型数据库管理系统。 IBM Db2 11.5.0版本至11.5.9版本和12.1.0版本至12.1.4版本存在安全漏洞，该漏洞源于数据查询逻辑中对特殊元素的中和不当，可能导致认证用户造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-1577
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Same Patch Batch · IBM · 2026-04-30 · 14 CVEs total
| CVE-2026-6389 | 8.8 HIGH | IBM Turbonomic Prometurbo agent used by IBM Turbonomic Application Resource Management is |
| CVE-2026-6543 | 8.8 HIGH | Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint |
| CVE-2026-4503 | 7.5 HIGH | Unauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop |
| CVE-2025-36122 | 6.5 MEDIUM | IBM® Db2® is vulnerable to a denial of service with a specially crafted query when stmthea |
| CVE-2026-6542 | 6.5 MEDIUM | Monitor API allows cross-user read of transaction logs and deletion of build data via flow |
| CVE-2026-3345 | 6.5 MEDIUM | Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File |
| CVE-2026-3340 | 6.5 MEDIUM | Server-Side Request Forgery (SSRF) in Langflow URL Component |
| CVE-2026-4502 | 6.5 MEDIUM | Arbitrary File Write and Remote Code Execution Vulnerability in Langflow v2 API |
| CVE-2026-2311 | 6.4 MEDIUM | IBM i is affected by a privilege escalation vulnerability in Web Administration GUI [] |
| CVE-2026-3346 | 6.4 MEDIUM | Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw |
| CVE-2025-36335 | 6.2 MEDIUM | Vulnerabilities found |
| CVE-2025-14688 | 5.3 MEDIUM | IBM® Db2® is vulnerable to a denial of service when fetching from certain tables under spe |
| CVE-2025-36180 | 5.3 MEDIUM | Inadequate Pod Communication Restrictions, affects watsonx.data |
IV. Related Vulnerabilities
Same product: Db2
Same vendor: IBM
- CVE-2025-36122
IBM® Db2® is vulnerable to a denial of service with a specia - CVE-2025-14688
IBM® Db2® is vulnerable to a denial of service when fetching - CVE-2026-2311
IBM i is affected by a privilege escalation vulnerability in - CVE-2025-36180
Inadequate Pod Communication Restrictions, affects watsonx.d - CVE-2026-6389
IBM Turbonomic Prometurbo agent used by IBM Turbonomic Appli
V. Comments for CVE-2026-1577
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