CVE-2026-9421
📛 CVE Title
KLiK SocialMediaWebsite File upload.inc.php uniqid unrestricted upload
Description
A vulnerability was determined in KLiK SocialMediaWebsite 1.0. This vulnerability affects the function uniqid of the file upload.inc.php of the component File Handler. This manipulation causes unrestricted upload. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- VulDB
- CVSS severity
- MEDIUM
- CVSS score
- 6.9 / 10
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P- Effective score
- 6.9 / 10 MEDIUM source: CNA overview
- CWE(s)
-
CWE-434,CWE-284 - Reserved
- 2026-05-24
- Published
- 2026-05-25 03:15 UTC
- Last updated
- 2026-05-26 14:40 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/9xxx/CVE-2026-9421.json
- Linked Threat
- CVE-2026-9421 — CVE-2026-9421
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-25 04:16:26 UTC
- NVD last modified
- 2026-06-17 11:05:13 UTC
- NVD CVSS v3.1
- 7.3 / 10 HIGH source: cna@vuldb.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.4 / 10
- EPSS score
- 0.0029 (probability of exploitation in next 30 days)
- EPSS percentile
- 20.91% vs all CVEs — higher = more likely to be exploited, as of 2026-06-30
NVD / KEV / EPSS data refreshed 2026-06-30 17:38 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-31624 - Assigner
- VulDB
- Published
- May 25, 2026, 3:15:09 AM
- Updated
- May 26, 2026, 2:40:40 PM
- EUVD base score (CVSS 4.0)
-
6.9 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P - EUVD-reported EPSS
- 0.2900
- Vendors
- n/a
- Products
-
KLiK SocialMediaWebsite (1.0)
- Aliases
-
GHSA-fhgp-q8x3-7fx5
ENISA description: A vulnerability was determined in KLiK SocialMediaWebsite 1.0. This vulnerability affects the function uniqid of the file upload.inc.php of the component File Handler. This manipulation causes unrestricted upload. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| n/a | KLiK SocialMediaWebsite |
1.0 (affected)
|
— |
Vendor references (3)
References embedded in the original CVE record by the assigning CNA.
- VDB-365402 | KLiK SocialMediaWebsite File upload.inc.php uniqid unrestricted upload vdb-entrytechnical-description
- VDB-365402 | CTI Indicators (IOB, IOC, TTP, IOA) signaturepermissions-required
- Submit #813725 | SourceCodester SourceCodester KLiK Social Media Website v1.0.1 Unrestricted Upload third-party-advisory
Web references (6)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://nvd.nist.gov/vuln/detail/CVE-2026-9421 tenable:nvd.nist.gov
- https://vuldb.com/submit/813725 tenable:vuldb.com
- https://vuldb.com/vuln/365402 tenable:vuldb.com
- https://vuldb.com/vuln/365402/cti tenable:vuldb.com
- https://www.cve.org/CVERecord?id=CVE-2026-9421 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://vuldb.com/submit/813725 cna@vuldb.com
- https://vuldb.com/vuln/365402 cna@vuldb.com
- https://vuldb.com/vuln/365402/cti cna@vuldb.com
Remediations (17)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:access.redhat.com
Learn about our open source products, services, and company. You are here
2026-06-04 00:06 UTC -
web:attack.mitre.org
This mitigation can be implemented through the following measures: Remove Legacy Software: Use Case: Disable or remove older versions of software that no longer receive updates or security patches (e.g., legacy Java, Adobe Flash). Implementation: A company removes Flash Player from all employee systems after it has reached its end-of-life date.
2026-06-04 00:06 UTC -
web:cyberpress.org
Mitigation Ivanti's recommended remediation strategy differs by deployment type: On-premises customers must manually download and apply the appropriate patch (2025.4 Patch 1, 2025.3 Patch 1, or 2025.2 Patch 1) from the Ivanti License System (ILS) Download Portal
2026-06-04 00:06 UTC -
web:cybersecuritynews.com
Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.
2026-06-04 00:06 UTC -
web:github.com
CVE ID: CVE - 2026 -41091 Vulnerability Type: Improper Link Resolution Before File Access (CWE-59 - Link Following) Affected Component: Microsoft Malware Protection Engine Root Cause: Defender fails to properly resolve links/junctions during cloud-tagged file remediation /rollback, allowing redirection of privileged writes. Impact: Local authenticated attacker can escalate from standard user to ...
2026-06-04 00:06 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-06-04 00:06 UTC -
web:www.cisecurity.org
<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...
2026-06-04 00:06 UTC -
web:www.crowdstrike.com
Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.
2026-06-04 00:06 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-06-04 00:06 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-06-04 00:06 UTC -
web:nvd.nist.gov
The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...
2026-06-19 02:26 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-19 02:26 UTC -
web:support.microsoft.com
Improvements This update includes new features and quality improvements that were part of the following update: May 12, 2026—KB5089549 (OS Builds 26200.8457 and 26100.8457) May 26, 2026—KB5089573 (OS Builds 26200.8524 and 26100.8524) This update addresses security vulnerabilities documented in the following guide: June 2026 Security Updates. The following summary outlines key quality ...
2026-06-19 02:26 UTC -
web:www.crowdstrike.com
Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.
2026-06-19 02:26 UTC -
web:www.oracle.com
This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.
2026-06-19 02:26 UTC -
web:www.qualys.com
Accelerate vulnerability remediation by 43% with practical recommendations and a strategic roadmap to bolster your security. Achieve a 90% patch rate improvement through smart automation and Qualys Patch Management.
2026-06-19 02:26 UTC -
web:www.rapid7.com
Microsoft is publishing 200 vulnerabilities on June 2026 Patch Tuesday, including an HTTP/2 denial of service vulnerability and an elevation of privilege vulnerability in PowerToys.
2026-06-19 02:26 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-9421.json.
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