CVE-2026-108157GHSA-wrcg-4874-45p7
pingvin-share-x: Pingvin Share X 0.19.0 before 1.22.0 Account Takeover via OAuth Email Linking
smp46 pingvin-share-x
CVSS
9.2CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.53%Chance of exploitation activity in the next 30 days, higher than 44% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 1.22.0pingvin-share-xCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- pingvin-share-xaffected: 0.19.0 before 1.22.0CVE List
References 6
- github.com/smp46/pingvin-share-x/commit/07aa8c0a96030c439e9018ce94a2778bd37304e6Fixvia CVE List
- github.com/smp46/pingvin-share-x/releases/tag/v1.22.0Fixvia CVE List
- github.com/smp46/pingvin-share-x/security/advisories/GHSA-wrcg-4874-45p7Advisoryvia CVE List
- vulncheck.com/advisories/pingvin-share-x-0.19.0-before-1.22.0-account-takeover-via-oauth-email-linkingAdvisoryvia CVE List
- github.com/smp46/pingvin-share-x/blob/de7ffecf9bfc4976993149a5c4c98efe35161424/backend/src/oauth/oauth.service.ts#L158-L175Referencevia CVE List
- github.com/smp46/pingvin-share-xReferencevia CVE List