# CVE-2026-108163: Pingvin Share X ineffective rate limiting in authentication

Source: https://junglewise.ai/threats/cve-2026-108163-pingvin-share-x-before-1-22-0-contains-an-ineffective-rate  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-10. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-108163 · Severity: medium · CVSS 6.5 · Published 2026-10-10

Pingvin Share X is a self-hosted file sharing platform that uses rate limiting to protect authentication endpoints. A unit conversion bug causes throttler timeout values to be interpreted in milliseconds instead of seconds, making the rate limiting ineffective. Unauthenticated attackers can now brute-force passwords and TOTP codes on the sign-in and password reset endpoints.

Technologies: [Smp46 Pingvin Share X](https://junglewise.ai/threats/technologies/pingvin-share-x). Vendors: [Smp46](https://junglewise.ai/threats/vendors/smp46).

## Quick answers

**Is CVE-2026-108163 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108163 being exploited in the wild.

**How severe is CVE-2026-108163?** Medium severity, with a CVSS score of 6.5, published 10 October 2026.

**Which products and versions are affected?** Smp46 Pingvin Share X before 1.22.0.

**Is there a fix for CVE-2026-108163?** Yes: fixed in 1.22.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-108163 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-108163?** Check whether you run Smp46 Pingvin Share X at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 1.22.0

## Technical details

The rate limiter on /api/auth/signIn, /api/auth/signIn/totp, and /api/auth/resetPassword endpoints uses a Throttle decorator with TTL values specified in seconds, but the throttler library interprets them as milliseconds, resulting in a 1000x shorter blocking window. This allows unauthenticated attackers to send effectively unthrottled brute-force requests without authentication requirements. The fix updates the TTL values to the correct millisecond scale.

## Affected products

- smp46 Pingvin Share X before 1.22.0

## Timeline

- 2026-10-10: disclosed

## References

- [https://github.com/smp46/pingvin-share-x](https://github.com/smp46/pingvin-share-x)
- [https://github.com/smp46/pingvin-share-x/blob/68ebf191fe1362592ffd5517e662f087e36c10b2/backend/src/auth/auth.controller.ts](https://github.com/smp46/pingvin-share-x/blob/68ebf191fe1362592ffd5517e662f087e36c10b2/backend/src/auth/auth.controller.ts)

## Related threats

- [Pingvin Share X rate limit bypass via proxy header spoofing](https://junglewise.ai/threats/cve-2026-108162-pingvin-share-x-before-1-22-0-contains-a-rate-limit-bypass)
- [Pingvin Share X improper authentication in OAuth](https://junglewise.ai/threats/cve-2026-108157-pingvin-share-x-from-0-19-0-before-1-22-0-contains-an-improper)