CVE-2025-57203Network attack vector

Cross-user script execution via unsanitized chatbot prompts

Published Sep 22, 2025 · Updated Sep 24, 2025

Stored XSS in MagicProject AI 9.1 allows remote authenticated users to execute JavaScript in another user's browser via a crafted prompt. The generate-stream endpoint stores the multipart prompt parameter without adequate sanitization, and later views render its HTML payload without output encoding. An administrative account must submit the payload and another user must open the stored content; execution is limited to that user's web session.

CVSS severity4.8
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in MagicProject AI 9.1 allows remote authenticated users to execute JavaScript in another user's browser via a crafted prompt. The generate-stream endpoint stores the multipart prompt parameter without adequate sanitization, and later views render its HTML payload without output encoding. An administrative account must submit the payload and another user must open the stored content; execution is limited to that user's web session.

The record

CVE
CVE-2025-57203
Published
Sep 22, 2025
Updated
Sep 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8CISACVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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