CVE-2026-108157CWE-287

CVE-2026-108157

High · published October 9, 2026

CVSS v3.1
8.1
EPSS
1%
Percentile
44.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.2 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00535 · 44.3th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-10-09T21:16Z
References (6)
https://github.com/smp46/pingvin-share-x · [email protected]https://github.com/smp46/pingvin-share-x/blob/de7ffecf9bfc4976993149a5c4c98efe35161424/backend/src/oauth/oauth.service.ts#L158-L175 · [email protected]https://github.com/smp46/pingvin-share-x/commit/07aa8c0a96030c439e9018ce94a2778bd37304e6 · [email protected]https://github.com/smp46/pingvin-share-x/releases/tag/v1.22.0 · [email protected]https://github.com/smp46/pingvin-share-x/security/advisories/GHSA-wrcg-4874-45p7 · [email protected]https://www.vulncheck.com/advisories/pingvin-share-x-0.19.0-before-1.22.0-account-takeover-via-oauth-email-linking · [email protected]
EPSS history
Timeline
  • 11 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 09 OCT 16:04Z
    Pingvin Share X 0.19.0 before 1.22.0 Account Takeover via OAuth Email Linking
    cvelistv5
  • 09 OCT 16:04Z
    Pingvin Share X 0.19.0 before 1.22.0 Account Takeover via OAuth Email Linking
    cvelistv5