CVE-2023-36502Network attack vector

Script execution via reflected input

Published Jul 25, 2023 · Updated Apr 28, 2026

Reflected XSS in CTHthemes Balkon 1.3.2 and earlier allows remote attackers to execute scripts through a crafted link. Public advisories attribute the flaw to insufficient input sanitization and output escaping but do not identify the affected parameter or code locus. Exploitation requires an unauthenticated attacker to induce a user to open the crafted link; the injected script then runs in that user's browser context.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in CTHthemes Balkon 1.3.2 and earlier allows remote attackers to execute scripts through a crafted link. Public advisories attribute the flaw to insufficient input sanitization and output escaping but do not identify the affected parameter or code locus. Exploitation requires an unauthenticated attacker to induce a user to open the crafted link; the injected script then runs in that user's browser context.

The record

CVE
CVE-2023-36502
Published
Jul 25, 2023
Updated
Apr 28, 2026
Vendor
CTHthemes
Product
Balkon
Classifications
CWE-79, CAPEC-591, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2023CVE 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 <=1.3.2 changes=[{"at":"1.3.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CTHthemes · Balkonversion=n/a <=1.3.2 changes=[{"at":"1.3.3","status":"unaffected"}]

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected 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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