by Kastro
Paper/Archive/CVE-2026-108157

CVE-2026-108157

smp46 pingvin-share-x — Pingvin Share X 0.19.0 before 1.22.0 Account Takeover via OAuth Email Linking

EPSS 0.5%CVSS 9.2
critical.is priorityof 100
37
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 45.1.451 × 209.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
pingvin-share-x0.19.0 – < 1.22.01.22.0CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchgithub.com/smp46/pingvin-share-x/commit/07aa8c0a96030c439e9018ce94a2778bd37304e6advisorygithub.com/smp46/pingvin-share-x/security/advisories/GHSA-wrcg-4874-45p7writeupgithub.com/smp46/pingvin-share-x/blob/de7ffecf9bfc4976993149a5c4c98efe35161424/backend/src/oauth/oauth.service.ts#L158-L175refgithub.com/smp46/pingvin-share-x/releases/tag/v1.22.0refgithub.com/smp46/pingvin-share-xwriteupvulncheck.com/advisories/pingvin-share-x-0.19.0-before-1.22.0-account-takeover-via-oauth-email-linking