CVE-2025-66459

MEDIUM

lookyloo < 1.35.3 - Stored Cross-Site Scripting via URL Error Message

Title source: llm
STIX 2.1

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, a XSS vulnerability can be triggered when a user submits a list of URLs to capture, one of them contains a HTML element, and the capture fails. Then, the error field is populated with an error message that contains the bad URL they tried to capture, triggering the XSS. This vulnerability is fixed in 1.35.3.

References (4)

Core 4

Scores

CVSS v3 6.1
EPSS 0.0025
EPSS Percentile 16.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
lookyloo/lookyloo < 1.35.3
Published Dec 02, 2025
Tracked Since Feb 18, 2026