CVE-2026-55835
Lookyloo: Potential sub-system DoS due to parameter missmatch in notification
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 23, 2026
- Updated
- Oct 23, 2026
- Reserved
- Jun 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | GitHub_M |
Weaknesses
- CWE-233 Improper Handling of Parameters
Affected Products
| Product | Versions |
|---|---|
lookylooLookyloo |
|
References
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