{"id":"CVE-2026-55835","title":"Lookyloo: Potential sub-system DoS due to parameter missmatch in notification","summary":"Lookyloo is a web interface that allows users to capture a website page and then display a tree of domains that call each other. Prior to version 1.39.4, an unauthenticated user can trigger Lookyloo's \"report a capture\" email on demand (…","severity":"medium","cvss":6.9,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L","cvssSource":"cna","cwe":["CWE-233"],"vendor":"Lookyloo","product":"lookyloo","affected":["lookyloo < 1.39.4"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T04:14:02.867Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55835","references":[{"url":"https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj","label":"https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj"},{"url":"https://github.com/Lookyloo/lookyloo/pull/1330","label":"https://github.com/Lookyloo/lookyloo/pull/1330"},{"url":"https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082","label":"https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082"},{"url":"https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4","label":"https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T05:16:21.503Z","slug":"CVE-2026-55835","body":"## Overview\n\nLookyloo is a web interface that allows users to capture a website page and then display a tree of domains that call each other. Prior to version 1.39.4, an unauthenticated user can trigger Lookyloo's \"report a capture\" email on demand (this is expected). The /json/<uuid>/report API endpoint (CaptureReport) is incorrectly passing the email and comment parameters, overwriting as_admin. When True, as_admin will trigger a search query on a MISP instance (if configured) and add a list of matching URLs in the email sent to the analyst (not the submitter, so there is no risk of leaking information) . It could potentially cause a DoS on the MISP instance. This issue has been patched in version 1.39.4.\n\n## Affected\n\n- `lookyloo < 1.39.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}