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CVE-2025-51858

MediumPublished

Self Cross-Site Scripting (XSS) vulnerability in ChatPlayground.ai through 2025-05-24, allows attackers to execute arbitrary code and gain sensitive...

Published: Jul 22, 2025
Updated: Jul 22, 2025
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 20.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Self Cross-Site Scripting (XSS) vulnerability in ChatPlayground.ai through 2025-05-24, allows attackers to execute arbitrary code and gain sensitive information via a crafted SVG file contents sent through the chat component.

Sources

CVE-2025-51858Research
Documentation of CVE-2025-51858, a self-XSS vulnerability in ChatPlayground.ai enabling JWT theft and account hijacking, combined with an IDOR in /api/chat-history for persistent chat data leakage.

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