# CVE-2023-1669: SEOPress < 6.5.0.3 - Admin+ PHP Object Injection

> Admin users can trigger PHP object injection via serialized settings, potentially leading to code execution if suitable gadgets exist.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 May 2023
- **Updated:** 30 Jan 2025
- **Also known as:** GHSA-467c-9pm8-6w84

## What is CVE-2023-1669?

CVE-2023-1669 is a high-severity unsafe deserialization vulnerability in Unknown SEOPress, published on 2 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The SEOPress WordPress plugin before 6.5.0.3 unserializes user input provided via the settings, which could allow high-privilege users such as admin to perform PHP Object Injection when a suitable gadget is present.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2023-1669?

It affects 1 product.


Products: Seopress Seopress.

## How do I fix CVE-2023-1669?

No fix has been published for CVE-2023-1669 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1669 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1669 exists.

## Other vulnerabilities in Unknown SEOPress

- [CVE-2024-5488](https://insights.sbomify.com/CVE-2024-5488/): SEOPress < 7.9 - Unauthenticated Object Injection (critical 9.8)
- [CVE-2024-1168](https://insights.sbomify.com/CVE-2024-1168/): SEOPress – On-site SEO <= 7.9 - Authenticated(Contributor+) Stored Cross-Site Scripting via Social Image URL (medium 6.4)
- [CVE-2024-1134](https://insights.sbomify.com/CVE-2024-1134/): SEOPress – On-site SEO <= 7.5.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting (medium 6.4)
- [CVE-2024-2165](https://insights.sbomify.com/CVE-2024-2165/): SEOPress – On-site SEO <= 7.5.2.1 - Authenticated (Author+) Stored Cross-Site Scripting (medium 6.4)
- [CVE-2021-34641](https://insights.sbomify.com/CVE-2021-34641/): SEOPress <= 5.0.0 – 5.0.3 Authenticated Stored Cross-Site Scripting (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1669 and fix it if it is affected.

What it is: CVE-2023-1669 is a high-severity unsafe deserialization vulnerability in Unknown SEOPress, published on 2 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1669 exists.

Affected product: Unknown SEOPress. 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-2023-1669/ (Markdown: https://insights.sbomify.com/CVE-2023-1669/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1669
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1669
- OSV: https://osv.dev/vulnerability/CVE-2023-1669

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1669/
Summaries are generated and may contain mistakes; the official description above is the record.