# CVE-2026-108162: Pingvin Share X before 1.22.0 Rate Limit Bypass via Spoofed X-Forwarded-For

> Attackers can bypass rate limits by spoofing IP headers to brute-force credentials and TOTP codes in Pingvin Share X.

- **Severity:** Medium 6.9 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Oct 2026
- **Updated:** 13 Oct 2026
- **Also known as:** GHSA-3chq-cx7h-2cfx

## What is CVE-2026-108162?

CVE-2026-108162 is a medium-severity vulnerability in smp46 pingvin-share-x, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-348 (Use of Less Trusted Source)

## Which versions are affected by CVE-2026-108162?


## How do I fix CVE-2026-108162?

No fix has been published for CVE-2026-108162 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-108162 being exploited?

There is no known exploitation of CVE-2026-108162 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-108162 and fix it if it is affected.

What it is: CVE-2026-108162 is a medium-severity vulnerability in smp46 pingvin-share-x, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-108162 in the wild and no public exploit code.

Affected product: smp46 pingvin-share-x. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-108162/ (Markdown: https://insights.sbomify.com/CVE-2026-108162/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-108162
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-108162
- OSV: https://osv.dev/vulnerability/CVE-2026-108162

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-108162/
Summaries are generated and may contain mistakes; the official description above is the record.