CVE-2019-20522Network attack vector

Reflected XSS via unsanitized Link parameter

Published Mar 19, 2020 · Updated Aug 5, 2024

Cross-site scripting in ilchCMS 2.1.23 allows remote attackers to execute script in a user's browser via the Link parameter. The index.php/partner/index endpoint reflects POSTed Link input without adequate sanitization, allowing injected markup or script to reach the rendered response. Exploitation requires a victim to submit or visit the crafted request, and the resulting script can read accessible page data or alter actions in the victim's browser context.

CVSS severity6.1
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in ilchCMS 2.1.23 allows remote attackers to execute script in a user's browser via the Link parameter. The index.php/partner/index endpoint reflects POSTed Link input without adequate sanitization, allowing injected markup or script to reach the rendered response. Exploitation requires a victim to submit or visit the crafted request, and the resulting script can read accessible page data or alter actions in the victim's browser context.

The record

CVE
CVE-2019-20522
Published
Mar 19, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 19, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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