CVE-2026-9420Network attack vector

HTTP response manipulation via crafted GET parameter

Published May 25, 2026 · Updated May 25, 2026

CRLF injection in KLiK SocialMediaWebsite 1.0 allows remote attackers to alter HTTP responses through crafted GET requests. The public record identifies the HTTP GET request parameter handler, but does not name the parameter or disclose where CR/LF bytes are accepted. Exploitation requires victim interaction, while the published record does not identify the resulting data changes or service disruption.

CVSS severity6.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CRLF injection in KLiK SocialMediaWebsite 1.0 allows remote attackers to alter HTTP responses through crafted GET requests. The public record identifies the HTTP GET request parameter handler, but does not name the parameter or disclose where CR/LF bytes are accepted. Exploitation requires victim interaction, while the published record does not identify the resulting data changes or service disruption.

The record

CVE
CVE-2026-9420
Published
May 25, 2026
Updated
May 25, 2026
Vendor
msaad1999
Product
KLiK SocialMediaWebsite
Classifications
CWE-74, CWE-707
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

msaad1999 · KLiK SocialMediaWebsiteversion=1.0

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-707Improper Neutralization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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