# CVE-2026-14840: YOP Poll < 7.0.6 - Unauthenticated Vote Restriction Bypass via IP Header Spoofing

> Unauthenticated attackers can bypass vote restrictions in YOP Poll by spoofing IP headers, allowing unlimited votes on public polls.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Aug 2026
- **Updated:** 5 Aug 2026
- **Also known as:** GHSA-jqjg-6w6p-5mh7

## What is CVE-2026-14840?

CVE-2026-14840 is a medium-severity vulnerability in Unknown YOP Poll, published on 1 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The YOP Poll WordPress plugin before 7.0.6 does not validate the connection's origin IP address and instead trusts client-controlled forwarding headers when enforcing its per-IP vote restriction, allowing unauthenticated attackers to bypass the vote limit and cast unlimited votes on a public poll.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2026-14840?


## How do I fix CVE-2026-14840?

No fix has been published for CVE-2026-14840 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14840 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14840 exists.

Public exploit code:

- https://github.com/nullwhisper/CVE-2026-14840 (github_poc): https://github.com/nullwhisper/CVE-2026-14840

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14840 and fix it if it is affected.

What it is: CVE-2026-14840 is a medium-severity vulnerability in Unknown YOP Poll, published on 1 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14840 exists.

Affected product: Unknown YOP Poll. 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-2026-14840/ (Markdown: https://insights.sbomify.com/CVE-2026-14840/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14840
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14840
- OSV: https://osv.dev/vulnerability/CVE-2026-14840

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14840/
Summaries are generated and may contain mistakes; the official description above is the record.