CVE-2026-108157: Pingvin Share X improper authentication in OAuth

CVE-2026-108157 · Severity: high · CVSS 8.1 · Published 2026-10-09

Pingvin Share X is a self-hosted file sharing platform that allows secure document exchange. An authentication flaw in versions 0.19.0 to 1.21.x allows attackers to take over any account, including administrator accounts, by registering a victim's email address with an OAuth/OIDC provider and bypassing multi-factor authentication. This gives attackers full control over the platform and all shared files.

Technologies: Smp46 Pingvin Share X. Vendors: Smp46.

Quick answers

Is CVE-2026-108157 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-108157 being exploited in the wild.
How severe is CVE-2026-108157?
High severity, with a CVSS score of 8.1, published 9 October 2026.
Which products and versions are affected?
Smp46 Pingvin Share X 0.19.0 to 1.21.x.
Is there a fix for CVE-2026-108157?
Yes: fixed in 1.22.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-108157 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-108157?
Check whether you run Smp46 Pingvin Share X at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 1.22.0

Technical details

The vulnerability exists in OAuthService.signUp() and GenericOidcProvider, which fail to verify the email_verified flag before linking OAuth identities during registration. An unauthenticated attacker can register a victim's unverified email on an enabled OAuth/OIDC provider and automatically sign in as that user, including bypassing TOTP. No authentication or user interaction is required beyond the ability to reach the OAuth endpoint.

Affected products

  • smp46 Pingvin Share X 0.19.0 to 1.21.x

Timeline

  • 2026-10-09: disclosed

References

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