CVE-2026-26273
9.8 · CRITICALOverview
CVE-2026-26273 is a critical-severity vulnerability affecting withknown known. It was published on February 13, 2026 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Known is a social publishing platform. Prior to 1.6.3, a Critical Broken Authentication vulnerability exists in Known 1.6.2 and earlier. The application leaks the password reset token within a hidden HTML input field on the password reset page. This allows any unauthenticated attacker to retrieve the reset token for any user by simply querying the user's email, leading to full Account Takeover (ATO) without requiring access to the victim's email inbox. This vulnerability is fixed in 1.6.3.
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, < 1.6.3 | Affected |
Frequently Asked Questions
What is CVE-2026-26273?
CVE-2026-26273 is a critical-severity vulnerability affecting withknown known. It was published on February 13, 2026 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
How severe is CVE-2026-26273?
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-26273?
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-2026-26273?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-26273 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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