CVE-2026-108163 smp46 CVE debrief

Who should care

Defenders responsible for Pingvin Share X instances, especially those exposed to the internet or untrusted networks, should assess their exposure and verify the effectiveness of their current rate limiting and authentication mechanisms. Security teams and administrators managing authentication services should prioritize verifying and mitigating this vulnerability.

Why it matters

CVE-2026-108163 is a medium-severity vulnerability in Pingvin Share X that allows unauthenticated brute-force attacks due to ineffective rate limiting. Defenders should verify exposure, especially for internet-exposed instances, and assess current authentication mechanisms. The vulnerability requires verification of affected versions and remediation efforts.

• Potential for brute-force attacks on authentication endpoints.
• Increased risk of unauthorized access to accounts.
• Need for verification of current rate limiting effectiveness.
• Priority for upgrading to a fixed version of Pingvin Share X.

Technical summary

The vulnerability in Pingvin Share X before version 1.22.0 is due to the incorrect interpretation of throttler TTL values specified in seconds as milliseconds. This results in effectively unthrottled requests to /api/auth/signIn, /api/auth/signIn/totp, and /api/auth/resetPassword endpoints, allowing unauthenticated attackers to conduct brute-force attacks on passwords and TOTP codes. Affected product deployments should be verified for exposure, especially those exposed to the internet or untrusted networks, and defenders should assess the effectiveness of their current rate limiting and authentication mechanisms.

Defensive priority

Defenders should prioritize verifying exposure of Pingvin Share X instances, especially those exposed to the internet or untrusted networks, and assess the effectiveness of their current rate limiting and authentication mechanisms.

Recommended defensive actions

• Verify the version of Pingvin Share X in use and assess exposure to untrusted networks or internet-exposed instances.
• Review and enhance rate limiting configurations for authentication endpoints.
• Implement additional security measures such as IP blocking or rate limiting on authentication attempts.
• Consider upgrading to Pingvin Share X version 1.22.0 or later if available.
• 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.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but do not offer specific information on exploitation or affected versions beyond Pingvin Share X before 1.22.0. Vendor remediation information is not provided in the corpus.

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.