Is CVE-2026-28445 actively exploited?

No active exploitation of CVE-2026-28445 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28445 be exploited remotely?

Yes. CVE-2026-28445 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28445?

CVE-2026-28445 has a CVSS score of 8.7 (HIGH).

HOME VULNERABILITIESCVE-2026-28445

HIGH

CVE-2026-28445

CWE-79Published: May 22, 2026· Updated: May 22, 2026

8.7

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.1th

Official Description

Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the RatingButton component in the embed package renders the user-controlled customIcon.svg field directly via Solid's innerHTML directive without any sanitization, even though DOMPurify is already a dependency and is used elsewhere in the codebase (e.g., StreamingBubble.tsx). Because rating blocks are not flagged as isUnsafe by the import sanitizer and the builder preview renders bots inline on the builder's own origin (builder.typebot.io) under a CSP permitting 'unsafe-inline', a malicious imported or collaborator-crafted typebot can execute arbitrary HTML/JS in the builder's authenticated context, bypassing the Web Worker sandbox that protects Script blocks during preview. This allows session hijacking and privilege escalation within the builder application. This issue has been fixed in version 3.16.0.

NVD Source

Technical Analysis

CVE-2026-28445 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.7.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.