Vulnerability · Published Feb 13, 2026 · Assigned by GitHub_M

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

Critical 9.8

In plain English

A critical-severity information exposure in known from idno. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.0)9.8Critical

Exploit odds (30 days)1.0%top 37.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	idno/known	1.6.3	GHSA-78wq-6gcv-w28r

Affected products (as reported)

Vendor	Product	Versions
idno	known	< 1.6.3

Weakness: CWE-200, CWE-640 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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