---
id: CVE-2026-108162
title: >-
  Pingvin Share X before 1.22.0 contains a rate limit bypass vulnerability that
  allows unauthenticated remote attackers to evade per-IP throttling because
  backend/src/main.ts unconditionally trusts proxy headers
summary: >-
  Pingvin Share X before 1.22.0 contains a rate limit bypass vulnerability that
  allows unauthenticated remote attackers to evade per-IP throttling because
  backend/src/main.ts unconditionally trusts proxy headers. Attackers can rotate
  spoof…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-348
published: '2026-10-10'
updated: '2026-10-10'
sourceUpdated: '2026-10-10T14:16:37.397'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108162'
references:
  - url: 'https://github.com/smp46/pingvin-share-x'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/smp46/pingvin-share-x/blob/68ebf191fe1362592ffd5517e662f087e36c10b2/backend/src/main.ts#L57
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/smp46/pingvin-share-x/commit/25e9cee7fb1c155300b5663fc5fedeea32d20954
    label: disclosure@vulncheck.com
  - url: 'https://github.com/smp46/pingvin-share-x/releases/tag/v1.22.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/smp46/pingvin-share-x/security/advisories/GHSA-7gx2-g6x2-7mjg
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/pingvin-share-x-before-1.22.0-rate-limit-bypass-via-spoofed-x-forwarded-for
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-10T15:25:58.081Z'
---

## Overview

Pingvin Share X before 1.22.0 contains a rate limit bypass vulnerability that allows unauthenticated remote attackers to evade per-IP throttling because backend/src/main.ts unconditionally trusts proxy headers. Attackers can rotate spoofed X-Forwarded-For values against /api/auth/signIn, /api/auth/signIn/totp, and /api/auth/resetPassword to brute-force passwords and TOTP codes and forge logged client IP addresses.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.