# CVE-2026-9420: KLiK SocialMediaWebsite injection in HTTP GET Request Parameter Handler

Source: https://junglewise.ai/threats/cve-2026-9420-klik-socialmediawebsite-injection-in-http-get-request-parameter  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-25. Updated: 2026-05-26  
License: CC BY 4.0 with a link back

CVE-2026-9420 · Severity: medium · CVSS 6.3 · Published 2026-05-25

A vulnerability exists in the KLiK SocialMediaWebsite platform, which is used for social networking. An attacker can exploit a flaw in how the website handles web requests to perform unauthorized actions or inject malicious content. This could lead to a compromise of user data or unauthorized changes to the website's behavior. Public exploit code is currently available, increasing the risk of an attack.

Technologies: [KLiK SocialMediaWebsite](https://junglewise.ai/threats/technologies/socialmediawebsite). Vendors: [KLiK](https://junglewise.ai/threats/vendors/klik).

## Quick answers

**Is CVE-2026-9420 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9420 being exploited in the wild.

**How severe is CVE-2026-9420?** Medium severity, with a CVSS score of 6.3, published 25 May 2026.

**Which products and versions are affected?** KLiK SocialMediaWebsite 1.0.

**Is there a fix for CVE-2026-9420?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-9420 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-9420?** Check whether you run KLiK SocialMediaWebsite at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

KLiK SocialMediaWebsite 1.0 is vulnerable to an injection flaw within its HTTP GET Request Parameter Handler. The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) and CWE-707 (Improper Neutralization). An unauthenticated remote attacker can exploit this by sending specially crafted GET requests. While the specific injection type (e.g., SQLi, XSS) is not explicitly detailed in the advisory, the CVSS vector indicates that user interaction is required (UI:R) and the impact is a partial loss of confidentiality, integrity, and availability. Public exploits are reportedly available.

## Affected products

- KLiK SocialMediaWebsite 1.0

## Timeline

- 2026-05-25: disclosed
- 2026-05-25: advisory

## References

- [https://vuldb.com/submit/813723](https://vuldb.com/submit/813723)
- [https://vuldb.com/submit/813730](https://vuldb.com/submit/813730)
- [https://vuldb.com/submit/813731](https://vuldb.com/submit/813731)
- [https://vuldb.com/submit/813732](https://vuldb.com/submit/813732)
- [https://vuldb.com/vuln/365401](https://vuldb.com/vuln/365401)
- [https://vuldb.com/vuln/365401/cti](https://vuldb.com/vuln/365401/cti)

## Related threats

- [KLiK SocialMediaWebsite injection in HTTP POST Request Parameter Handler](https://junglewise.ai/threats/cve-2026-9422-klik-socialmediawebsite-injection-in-http-post-request-parameter)
- [KLiK SocialMediaWebsite unrestricted file upload in upload.inc.php](https://junglewise.ai/threats/cve-2026-9421-klik-socialmediawebsite-unrestricted-file-upload-in-upload-inc-php)