CVE-2026-108162
Pingvin Share X before 1.22.0 Rate Limit Bypass via Spoofed X-Forwarded-For
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 10, 2026
- Updated
- Oct 13, 2026
- Reserved
- Oct 9, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-348 Use of Less Trusted Source
Affected Products
| Product | Versions |
|---|---|
pingvin-share-xsmp46 |
|
References
- GitHub Security Advisory (GHSA-7gx2-g6x2-7mjg)vendor-advisory
- https://github.com/smp46/pingvin-share-x/commit/25e9cee7fb1c155300b5663fc5fedeea32d20954patch
- pingvin-share-x v1.22.0 Release Notesrelease-notes
- https://github.com/smp46/pingvin-share-x/blob/68ebf191fe1362592ffd5517e662f087e36c10b2/backend/src/main.ts#L57technical-description
- https://github.com/smp46/pingvin-share-xproduct
- VulnCheck Advisory: Pingvin Share X before 1.22.0 Rate Limit Bypass via Spoofed X-Forwarded-Forthird-party-advisory
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