# CVE-2023-5313: phpkobo Ajax Poll Script ajax-poll.php improper enforcement of a single, unique action

> Attackers can exploit a race condition in the poll handler to bypass single-action enforcement, potentially modifying poll data.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 30 Sep 2023
- **Updated:** 20 Sep 2024
- **Also known as:** GHSA-xqh3-fr5h-w8cj

## What is CVE-2023-5313?

CVE-2023-5313 is a medium-severity vulnerability in phpkobo Ajax Poll Script, published on 30 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability classified as problematic was found in phpkobo Ajax Poll Script 3.18. Affected by this vulnerability is an unknown functionality of the file ajax-poll.php of the component Poll Handler. The manipulation leads to improper enforcement of a single, unique action. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-240949 was assigned to this vulnerability.

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization), CWE-837 (Improper Enforcement of a Single, Unique Action)

## Which versions are affected by CVE-2023-5313?

It affects 1 product.


Products: Phpkobo Ajax Poll Script.

## How do I fix CVE-2023-5313?

No fix has been published for CVE-2023-5313 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-5313 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-5313 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-5313 and fix it if it is affected.

What it is: CVE-2023-5313 is a medium-severity vulnerability in phpkobo Ajax Poll Script, published on 30 Sep 2023. 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-2023-5313 exists.

Affected product: phpkobo Ajax Poll Script. 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-2023-5313/ (Markdown: https://insights.sbomify.com/CVE-2023-5313/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-5313
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-5313
- OSV: https://osv.dev/vulnerability/CVE-2023-5313

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-5313/
Summaries are generated and may contain mistakes; the official description above is the record.