What is CVE-2026-9420?

CVE-2026-9420 is a medium-severity vulnerability in Klik Socialmediawebsite, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-05-25.

How severe is CVE-2026-9420?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Klik Socialmediawebsite

CVE-2026-9420

A vulnerability was found in KLiK SocialMediaWebsite 1.0. This affects an unknown part of the component HTTP GET Request Parameter Handler. The manipulation results in injection. It is possible to launch the attack remotely. The exploit has been made public and could be used.

Published 2026-05-25 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (34.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002

Affected products

Klik Socialmediawebsite — versions 1.0

Weakness classification (CWE)

References

vuldb.com/vuln/365401 (vdb-entry)
vuldb.com/vuln/365401/cti (signature, permissions-required)
vuldb.com/submit/813723 (third-party-advisory)
vuldb.com/submit/813730 (third-party-advisory)
vuldb.com/submit/813731 (third-party-advisory)
vuldb.com/submit/813732 (third-party-advisory)

Frequently asked questions

What is CVE-2026-9420?: CVE-2026-9420 is a medium-severity vulnerability in Klik Socialmediawebsite, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-05-25.
How severe is CVE-2026-9420?: Medium severity. CVSS v3 base score is 6.3 out of 10.