CVE-2025-51858

MEDIUM

ChatPlayground.ai <2025-05-24 - XSS

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-51858. PoCs published by Secsys-FDU.

AI-analyzed exploit summary Technical analysis of CVE-2025-51858 detailing a self-XSS vulnerability in ChatPlayground.ai's chat component and an IDOR in the /api/chat-history endpoint, enabling JWT token theft and persistent data leakage.

Description

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.

Exploits (1)

nomisec WRITEUP 1 stars
by Secsys-FDU · poc
https://github.com/Secsys-FDU/CVE-2025-51858

Technical analysis of CVE-2025-51858 detailing a self-XSS vulnerability in ChatPlayground.ai's chat component and an IDOR in the /api/chat-history endpoint, enabling JWT token theft and persistent data leakage.

Classification
Writeup 90%
Attack Type
Xss | Auth Bypass | Info Leak
Complexity
Moderate
Reliability
Reliable
Target: ChatPlayground.ai (version not specified)
No auth needed
Prerequisites: Victim interaction (copy-pasting malicious text) · Access to the target's chat interface
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 6.1
EPSS 0.0027
EPSS Percentile 18.3%
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 poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Published Jul 22, 2025
Tracked Since Feb 18, 2026