{"id":"CVE-2026-55835","state":"PUBLISHED","title":"Lookyloo: Potential sub-system DoS due to parameter missmatch in notification","description":"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 (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.","publishedAt":"2026-10-23T04:14:02.867Z","updatedAt":"2026-10-23T21:05:41.736Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["Lookyloo lookyloo"],"affected":[{"vendor":"Lookyloo","product":"lookyloo","versions":[{"version":"< 1.39.4","status":"affected"}]}],"references":["https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj","https://github.com/Lookyloo/lookyloo/pull/1330","https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082","https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4"],"weaknesses":["CWE-233"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55835.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55835","state":"PUBLISHED","datePublished":"2026-10-23T04:14:02.867Z","dateUpdated":"2026-10-23T21:05:41.736Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-17T16:29:38.865Z"},"containers":{"cna":{"title":"Lookyloo: Potential sub-system DoS due to parameter missmatch in notification","descriptions":[{"lang":"en","value":"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 (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."}],"affected":[{"vendor":"Lookyloo","product":"lookyloo","versions":[{"version":"< 1.39.4","status":"affected"}]}],"references":[{"url":"https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj","name":"https://github.com/Lookyloo/lookyloo/security/advisories/GHSA-66gj-hmcp-5cfj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Lookyloo/lookyloo/pull/1330","name":"https://github.com/Lookyloo/lookyloo/pull/1330","tags":["x_refsource_MISC"]},{"url":"https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082","name":"https://github.com/Lookyloo/lookyloo/commit/d5b9a401998cd50b88e5d7425f82baac78d8f082","tags":["x_refsource_MISC"]},{"url":"https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4","name":"https://github.com/Lookyloo/lookyloo/releases/tag/v1.39.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"LOW","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-233","lang":"en","description":"CWE-233: Improper Handling of Parameters","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-23T04:14:02.867Z"},"source":{"advisory":"GHSA-66gj-hmcp-5cfj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-23T17:33:07.937098Z","id":"CVE-2026-55835","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-23T21:05:41.736Z"}}]}}}