CVE-2026-9137 Details
Description
The CSP report endpoint in MISP 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.
A log flooding vulnerability has been identified in MISP (Malware Information Sharing Platform) versions prior to 2.5.38. The issue arises in the Content Security Policy (CSP) report endpoint, which was supposed to limit CSP reports to 1 KB but mistakenly allowed reports of up to 1 MB before truncation. In deployments where this endpoint is accessible to untrusted clients, attackers could exploit this flaw to generate excessive log volume, leading to resource exhaustion or log flooding.
Users can upgrade to MISP version 2.5.38 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MISP/MISP/commit/02932cccab230b295afcaf5aa05e363d30db0ec9 | CIRCL | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CIRCL |
Affected Products
| Product | Versions |
|---|---|
| misp-project misp | >= 2.5.0, < 2.5.38 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 22, 2026 | CPE Deprecation Remap | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | CIRCL |
| Jun 2, 2026 | Initial Analysis | [email protected] |
| May 29, 2026 | CVE Modified | CIRCL |
| May 20, 2026 | New CVE Received | CIRCL |