CVE-2026-26273

9.8 criticalEPSS 1.0%

Critical (9.8) in withknown known. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
CWEs: CWE-200, CWE-640
Published: 2026-02-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

withknown:known

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

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