CVE-2026-9137— CSP Report Endpoint Log Flooding via Incorrect Size Limit
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-9137
Vulnerability Information
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Vulnerability Title
CSP Report Endpoint Log Flooding via Incorrect Size Limit
Source: NVD (National Vulnerability Database)
Vulnerability Description
The CSP report endpoint intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource exhaustion or log flooding.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
MISP 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP是MISP开源的一套开源的软件解决方案。该产品用于收集、存储、分发、共享网络安全指标，并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP存在资源管理错误漏洞，该漏洞源于限制日志报告为1KB但错误允许报告达到1MB后才截断，可能导致攻击者生成过多日志量并造成资源耗尽或日志淹没。
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-2026-9137
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Patches & Fixes for CVE-2026-9137 (1)
Same Patch Batch · misp · 2026-05-20 · 3 CVEs total
| CVE-2026-9084 | MISP OIDC authentication bypass via automatic email-based account linking under insecure I | |
| CVE-2026-9136 | Unauthorized ShadowAttribute modification in MISP via client-supplied identifier |
IV. Related Vulnerabilities
Same product: misp
- CVE-2026-9136
Unauthorized ShadowAttribute modification in MISP via client - CVE-2026-9084
MISP OIDC authentication bypass via automatic email-based ac - CVE-2026-44379
MISP: Improper UUID validation in MISP Collections - CVE-2026-44380
MISP: Improper access control in auth key reset allows priv - CVE-2026-44381
MISP: SQL injection via unvalidated ordering parameters in e
Same vendor: misp
- CVE-2026-9136
Unauthorized ShadowAttribute modification in MISP via client - CVE-2026-9084
MISP OIDC authentication bypass via automatic email-based ac - CVE-2026-44379
MISP: Improper UUID validation in MISP Collections - CVE-2026-44380
MISP: Improper access control in auth key reset allows priv - CVE-2026-44381
MISP: SQL injection via unvalidated ordering parameters in e
Same weakness: CWE-400
- CVE-2026-47073
Unbounded memory consumption in WebSocket client in hackney - CVE-2026-47077
Unbounded body accumulation in HTTP/3 response loop in hackn - CVE-2026-47071
SOCKS5 TLS upgrade ignores caller timeout in hackney - CVE-2026-5308
Missing request body size limits on Zoom plugin HTTP endpoin - CVE-2026-5755
Denial of service via crafted TIFF file upload
V. Comments for CVE-2026-9137
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