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CVE-2026-55835

Lookyloo is a web interface that allows users to capture a website page and then display a tree of…

Risk score
46/100
CVSS
6.9 v4.0
Exploit chance (30 days)
0.3%
Published
23 Oct 2026

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What to know

What it is
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 incorre…
Affected
See advisory
Fix
Upgrade the product to 1.39.4 or later.
Exploitation
No known exploitation

Why it is Yellow

  • CVSS 6.9 medium

References

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.

Last activity 23 Oct 2026. Patch Forecast updates every hour.