CVE-2023-33356Public exploitNetwork attack vector

Stored script execution via unneutralized circle content

Published May 25, 2023 · Updated Aug 2, 2024

Stored cross-site scripting in IceCMS 1.0.0 allows remote authenticated users to execute JavaScript in a visitor's browser. The /Websquare/create/circle API accepts an HTML image payload with an onerror handler for planet-circle content and later renders it without neutralization. A low-privileged account and a victim who views the stored content are required; resulting script execution is confined to the victim's IceCMS origin.

CVSS severity5.4
Medium
EPSS probability0.38%
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 IceCMS 1.0.0 allows remote authenticated users to execute JavaScript in a visitor's browser. The /Websquare/create/circle API accepts an HTML image payload with an onerror handler for planet-circle content and later renders it without neutralization. A low-privileged account and a victim who views the stored content are required; resulting script execution is confined to the victim's IceCMS origin.

The record

CVE
CVE-2023-33356
Published
May 25, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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

5.4NIST NVDCVSS: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript

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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