Auth bypass in Smp46 Pingvin-Share-X
CVE-2026-108157
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/smp46/pingvin-share-x/security/advisories/GHSA-wrcg-4874-45p7 (vendor-advisory)
- github.com/smp46/pingvin-share-x/commit/07aa8c0a96030c439e9018ce94a2778bd37304e6 (patch)
- github.com/smp46/pingvin-share-x/blob/de7ffecf9bfc4976993149a5c4c98efe35161424/… (technical-description)
- github.com/smp46/pingvin-share-x/releases/tag/v1.22.0 (release-notes)
- github.com/smp46/pingvin-share-x (product)
- www.vulncheck.com/advisories/pingvin-share-x-0.19.0-before-1.22.0-account-takeo… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108157?
- CVE-2026-108157 is a high-severity vulnerability in Smp46 Pingvin-Share-X, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-10-09.
- How severe is CVE-2026-108157?
- High severity. CVSS v3 base score is 8.1 out of 10.