CVE-2025-66460: Lookyloo vulnerable to XSS due to lack of escaping in HTML elements passed to Datatables

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-02 · updated 2026-09-25
Weakness: CWE-79

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 1.35.3, Lookyloo passed improperly escaped values to cells rendered in datatables using the orthogonal-data feature. It is definitely exploitable from the popup view, but it is most probably also exploitable in many other places. This vulnerability is fixed in 1.35.3.

Affected products

lookyloo: before 1.35.3 — fixed in 1.35.3

How to fix

Upgrade to a fixed version: lookyloo 1.35.3. Check the vendor advisory for mitigations.

References

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