CVE-2026-44196: Pingvin Share X: TOTP Authentication Bypass via Password-only Login

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-12 · updated 2026-10-26
Weakness: CWE-287

Description

Pingvin Share X is a secure and easy self-hosted file sharing platform. From 1.14.1 to 1.16.2, a critical authentication bypass vulnerability allows an attacker who has obtained a valid username and password to skip the second-factor authentication (TOTP) requirement entirely. Although, an attacker still needs the user's password to reach this stage. This vulnerability is fixed in 1.16.3.

Affected products

smp46 pingvin-share-x: from 1.14.1, < 1.16.3

References

https://github.com/smp46/pingvin-share-x/security/advisories/GHSA-j679-vp39-qwqq

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