# CVE-2026-97256: WordPress Page Builder by SiteOrigin plugin <= 2.36.0 - PHP Object Injection vulnerability

> An attacker can exploit PHP object injection in the SiteOrigin Page Builder plugin to potentially execute arbitrary code on the WordPress site.

- **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:** 30 Sep 2026
- **Updated:** 30 Sep 2026
- **Also known as:** GHSA-6p5w-gc4f-g298

## What is CVE-2026-97256?

CVE-2026-97256 is a high-severity unsafe deserialization vulnerability in Greg – SiteOrigin Page Builder by SiteOrigin, published on 30 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Editor PHP Object Injection in Page Builder by SiteOrigin <= 2.36.0 versions.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2026-97256?


## How do I fix CVE-2026-97256?

No fix has been published for CVE-2026-97256 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-97256 being exploited?

There is no known exploitation of CVE-2026-97256 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-97256 and fix it if it is affected.

What it is: CVE-2026-97256 is a high-severity unsafe deserialization vulnerability in Greg – SiteOrigin Page Builder by SiteOrigin, published on 30 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-97256 in the wild and no public exploit code.

Affected product: Greg – SiteOrigin Page Builder by SiteOrigin. 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-2026-97256/ (Markdown: https://insights.sbomify.com/CVE-2026-97256/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-97256
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-97256
- OSV: https://osv.dev/vulnerability/CVE-2026-97256

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-97256/
Summaries are generated and may contain mistakes; the official description above is the record.