CVE-2026-28508
8.6 · HIGHOverview
CVE-2026-28508 is a high-severity vulnerability affecting withknown known. It was published on March 6, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Idno is a social publishing platform. Prior to version 1.6.4, a logic error in the API authentication flow causes the CSRF protection on the URL unfurl service endpoint to be trivially bypassed by any unauthenticated remote attacker. Combined with the absence of a login requirement on the endpoint itself, this allows an attacker to force the server to make arbitrary outbound HTTP requests to any host, including internal network addresses and cloud instance metadata services, and retrieve the response content. This issue has been patched in version 1.6.4.
Remediation
Check the references section for vendor advisories and patches from withknown. Update known to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| withknown | known | >= 0, < 1.6.4 | Affected |
Frequently Asked Questions
What is CVE-2026-28508?
CVE-2026-28508 is a high-severity vulnerability affecting withknown known. It was published on March 6, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2026-28508?
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-28508?
Check the references section for vendor advisories and patches from withknown. Update known to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-28508?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-28508 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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