CVE-2024-37536Network attack vector

Stored browser-script execution via undisclosed input handling

Published Jul 21, 2024 · Updated Apr 28, 2026

Stored cross-site scripting in Web357 Easy Custom Code 1.0.8 and earlier allows remote authenticated users to inject browser scripts. Patchstack has not published the affected request parameter, storage path, or output sink that accepts and renders the unneutralized input. Administrator access is required to plant the payload, and another privileged user must visit a crafted page or perform a related action for the stored script to execute.

CVSS severity5.4
Medium
EPSS probability0.27%
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 Web357 Easy Custom Code 1.0.8 and earlier allows remote authenticated users to inject browser scripts. Patchstack has not published the affected request parameter, storage path, or output sink that accepts and renders the unneutralized input. Administrator access is required to plant the payload, and another privileged user must visit a crafted page or perform a related action for the stored script to execute.

The record

CVE
CVE-2024-37536
Published
Jul 21, 2024
Updated
Apr 28, 2026
Vendor
Web357
Product
Easy Custom Code (LESS/CSS/JS)
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Web357 · Easy Custom Code (LESS/CSS/JS)version=n/a <=1.0.8

Published CVSS scores

5.9PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1189Drive-by Compromise

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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