What’s Vulnerable › Vulnerabilities

CVE-2026-26273: Known affected by Account Takeover via Password Reset Token Leakage

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-13 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• idno known: before 1.6.3 — fixed in 1.6.3

How to fix

Upgrade to a fixed version: idno known 1.6.3. Check the vendor advisory for mitigations.

References

• https://github.com/idno/known/commit/8439a0747471559fb1ea9f074b929d390f27e66a
• https://github.com/idno/known/releases/tag/1.6.3
• https://github.com/idno/known/security/advisories/GHSA-78wq-6gcv-w28r

Get alerted when CVE-2026-26273 or the next vulnerability affects your stack