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TI-2026-70100 Aliases CVE-2026-108157

Account takeover in Pingvin Share X via OAuth email linking

Priority MEDIUM 48CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

Pingvin Share X from 0.19.0 before 1.22.0 contains an improper authentication flaw in automatic OAuth email linking in OAuthService.signUp(). A remote unauthenticated attacker can register a victim's unverified email on an enabled OAuth or OIDC provider and sign in as that victim, including administrators, while bypassing TOTP. The GenericOidcProvider does not check email_verified (CWE-287).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00535 45th percentileScored 2026-11-07
Fix Fixed pingvin-share-x (smp46): 1.22.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
smp46pingvin-share-x0.19.0 to before 1.22.01.22.0Patch availableCNA
  • pingvin-share-x Vendorsmp46 Affected 0.19.0 to before 1.22.0 Fixed in 1.22.0 Patch available CNA

Remediation

Upgrade smp46 pingvin-share-x to version 1.22.0.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA pingvin-share-x (smp46) Fixed in 1.22.0

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-108157

References

Patch 1

Advisory 1

Other 3

  • TI-2026-32175 Pingvin Share X: TOTP Authentication Bypass via Password-only Login CVSS 3.1CRITICAL 9.1
  • TI-2026-36622 TOTP enrollment hijack: password gate skipped due to unawaited promise CVSS 3.1HIGH 8.8
  • TI-2026-70530 Rate limit bypass in Pingvin Share X via spoofed X-Forwarded-For CVSS 4.0MEDIUM 6.9
  • TI-2026-70531 Ineffective authentication rate limiting in Pingvin Share X CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences