{"id":"CVE-2026-9137","summary":"CSP Report Endpoint Log Flooding in MISP via Incorrect Size Limit","details":"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.","modified":"2026-08-07T11:51:26.280059389Z","published":"2026-05-20T18:43:30.895Z","database_specific":{"cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9137.json","cna_assigner":"CIRCL"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9137.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9137"},{"type":"FIX","url":"https://github.com/MISP/MISP/commit/02932cccab230b295afcaf5aa05e363d30db0ec9"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/misp/misp","events":[{"introduced":"0aab6c7e1888573dfa74bd088a41d9235585310c"},{"fixed":"b6c682a71e0689beef4f21200713f25ce8fd998f"},{"fixed":"02932cccab230b295afcaf5aa05e363d30db0ec9"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.5.0"},{"fixed":"2.5.38"}]}}],"versions":["v2.5.37","v2.5.36","v2.5.35","v2.5.34","v2.5.33","v2.5.32","v2.5.31","v2.5.30","v2.5.29","v2.5.28","v2.5.27","v2.5.26","v2.5.25","v2.5.24","v2.5.23","v2.5.22","v2.5.21","v2.5.20","v2.5.19","v2.5.18","v2.5.17","v2.5.16","v2.5.15","v2.5.12","v2.5.14","v2.5.13","v2.5.11","v2.5.10","v2.5.9","v2.5.8","v2.5.7","v2.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-9137.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}