CVE-2026-9137

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.

Score

CVSS 3.1 7.5 High

Status

Analyzed - 5a6e4751-2f3f-4070-9419-94fb35b644e8

Published

2026-05-20

Last modified

2026-05-29

Weaknesses

CWE-400

Affected products

• Misp (Misp)
• Misp (Misp-project)

References

• https://github.com/MISP/MISP/commit/02932cccab230b295afcaf5aa05e363d30db0ec9