CVE-2026-49467 smp46 CVE debrief

Who should care

Defenders responsible for securing file sharing platforms, especially those using Pingvin Share X, should assess their exposure and verify if versions 1.5.0 through 1.18.0 are in use.

Why it matters

CVE-2026-49467 is a high-severity vulnerability in Pingvin Share X that allows an attacker to bypass password verification for TOTP settings. Defenders should prioritize verifying exposure, assessing impact, and applying the fix to prevent potential unauthorized access.

• An attacker could bypass password verification for TOTP settings, potentially leading to unauthorized access
• Defenders need to verify if affected versions are in use and apply the fix
• Exposure could lead to compromised TOTP settings, requiring immediate attention

Technical summary

The vulnerability in Pingvin Share X versions 1.5.0 through 1.18.0 is caused by a missing `await` keyword on calls to the asynchronous `verifyPassword` method in `authTotp.service.ts` and the `authenticateUser` method in `auth.service.ts`. This allows an attacker to bypass password verification when managing Time-based One-Time Password (TOTP) settings. The issue arises from the asynchronous nature of JavaScript `Promise` resolution, leading to incorrect authentication logic. The fix is implemented in version 1.18.1.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, especially those using Pingvin Share X for secure file sharing.

Recommended defensive actions

• Verify if Pingvin Share X versions 1.5.0 through 1.18.0 are in use and assess exposure.
• Apply the fix in version 1.18.1.
• Monitor for any unauthorized access attempts related to TOTP settings.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability is confirmed in Pingvin Share X versions 1.5.0 through 1.18.0. A fix is available in version 1.18.1. There are no official workarounds provided. Defenders should verify if affected versions are in use and assess their exposure to this vulnerability. The root cause is a missing `await` keyword on asynchronous authentication calls.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.