PT-2026-4544 · Unknown · Chattermate

Siyamapsekar2 · Published 2026-01-24 · Updated 2026-01-24 · CVE-2026-24399

Positive Technologies (AI Summary)

CVSS v3.1

9.3

Critical

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions ChatterMate versions 1.0.8 and below

Description ChatterMate is a no-code AI chatbot agent framework. Versions 1.0.8 and below accept and execute malicious HTML/JavaScript payloads when supplied as chat input. Specifically, an <iframe> payload containing a javascript: URI can be processed and executed in the browser context. This allows access to sensitive client-side data such as localStorage tokens and cookies, resulting in client-side injection.

Recommendations Upgrade to version 1.0.9 to address this issue.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-24399

GHSA-72P3-W95W-Q3J4

Affected Products

Chattermate

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24399.json · Exploit
• https://github.com/chattermate/chattermate.chat/commit/ff3398031abb97ae28546eaf993fed3619eaffdd · Patch
• https://github.com/chattermate/chattermate.chat/security/advisories/GHSA-72p3-w95w-q3j4 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-24399 · Security Note
• https://osv.dev/vulnerability/CVE-2026-24399 · Vendor Advisory
• https://github.com/chattermate/chattermate.chat/releases/tag/v1.0.9 · Note
• https://twitter.com/CveFindCom/status/2014875677862826360 · Twitter Post
• https://t.me/CVEtracker/42897 · Telegram Post
• https://twitter.com/TheHackerWire/status/2014870727787479351 · Twitter Post
• https://twitter.com/0dayPublishing/status/2014864808567308542 · Twitter Post
• https://twitter.com/CVEnew/status/2014995817246114253 · Twitter Post