Critical 9.8Published Feb 13, 2026

CVE-2026-26273Known is a social publishing platform.

Updated under an hour ago (2026-10-19 09:50 UTC)

Does this affect you?

It affects withknown known. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for withknown known

Exploited in the last 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.

CVSS: 9.8 CRITICAL (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-200, CWE-640
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

withknown known withknown:known	before 1.6.3	NVD

References

https://github.com/idno/known/commit/8439a0747471559fb1ea9f074b929d390f27e66apatch
https://github.com/idno/known/releases/tag/1.6.3product, release-notes
https://github.com/idno/known/security/advisories/GHSA-78wq-6gcv-w28rexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.