Skip to main content
← All vulnerabilities
CVE-2026-55835EUVD-2026-108582GHSA-66GJ-HMCP-5CFJ

Lookyloo: Potential sub-system DoS due to parameter missmatch in notification

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.39.4
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

Lookyloo, a web interface for capturing websites and mapping the domains they call, is affected through its report-a-capture API endpoint. An unauthenticated user could trigger an administrative search on a connected MISP instance, which could overload that MISP server and cause a denial of service.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original 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.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  4. Record last updated

Affected versions

  • Lookyloo lookyloo

    fixed in 1.39.4

References 4

GitHub · Lookyloo/lookyloo