CVE-2026-108157: Improper Authentication in smp46 pingvin-share-x
Description
Pingvin Share X from 0.19.0 before 1.22.0 contains an improper authentication vulnerability that allows remote unauthenticated attackers to take over accounts by abusing automatic OAuth email linking in OAuthService.signUp(). Attackers can register a victim's unverified email on an enabled OAuth/OIDC provider, exploiting the missing email_verified check in GenericOidcProvider, to sign in as the victim including administrators while bypassing TOTP.
CVSS v4.0
Score 9.2critical
Affected software
smp46
pingvin-share-x
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-108157 describes an improper authentication vulnerability in Pingvin Share X's OAuthService.signUp() method. The vulnerability arises because the GenericOidcProvider does not check the email_verified flag when linking OAuth/OIDC accounts. Attackers can register a victim's unverified email on an enabled OAuth/OIDC provider and gain unauthorized access to that victim's account, including administrator accounts, bypassing TOTP protections. This affects versions >=0.19.0 and <1.22.0.
Potential Impact
Successful exploitation allows remote unauthenticated attackers to fully take over user accounts, including administrator accounts, bypassing multi-factor authentication protections. This can lead to complete account compromise and unauthorized access to sensitive data or administrative functions within Pingvin Share X.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict or disable OAuth/OIDC providers that allow unverified email linking, and monitor for suspicious account registrations. Avoid relying solely on OAuth email linking without verification.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-09T15:41:44.132Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac917772cdf04f6566d3b44
Added to database: 10/09/2026, 16:33:59 UTC
Last enriched: 10/09/2026, 16:48:29 UTC
Last updated: 10/09/2026, 17:34:04 UTC
Views: 6
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