CVE-2023-33394Public exploitNetwork attack vector

Backend script execution via malicious JSON deployment

Published May 26, 2023 · Updated Jan 15, 2025

Stored cross-site scripting in SkyCaiji 2.5.4 allows remote authenticated users to execute script in a backend user's browser via malicious JSON. Published sources identify only deployment of malicious JSON; they do not disclose the backend endpoint, field, or missing neutralization operation. Exploitation requires low-privileged network access and backend user interaction, enabling script execution that can read or modify data in that user's browser context.

CVSS severity5.4
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in SkyCaiji 2.5.4 allows remote authenticated users to execute script in a backend user's browser via malicious JSON. Published sources identify only deployment of malicious JSON; they do not disclose the backend endpoint, field, or missing neutralization operation. Exploitation requires low-privileged network access and backend user interaction, enabling script execution that can read or modify data in that user's browser context.

The record

CVE
CVE-2023-33394
Published
May 26, 2023
Updated
Jan 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

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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