# CVE-2026-4063: Missing authorization in Social Icons Widget & Block – Social Media Icons & Share Buttons

> Authenticated subscribers can create sharing configurations that inject social buttons into all posts due to missing capability checks.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-5xh8-vh3c-9fxf

## What is CVE-2026-4063?

CVE-2026-4063 is a medium-severity missing authorization vulnerability in wpzoom Social Icons Widget & Block – Social Media Icons & Share Buttons, published on 13 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Social Icons Widget & Block by WPZOOM plugin for WordPress is vulnerable to unauthorized data modification due to a missing capability check in the add_menu_item() method hooked to admin_menu in all versions up to, and including, 4.5.8. This is due to the method performing wp_insert_post() and update_post_meta() calls to create a sharing configuration without verifying the current user has administrator-level capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to trigger the creation of a published wpzoom-sharing configuration post with default sharing button settings, which causes social sharing buttons to be automatically injected into all post content on the frontend via the the_content filter.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-4063?


## How do I fix CVE-2026-4063?

No fix has been published for CVE-2026-4063 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4063 being exploited?

There is no known exploitation of CVE-2026-4063 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4063 and fix it if it is affected.

What it is: CVE-2026-4063 is a medium-severity missing authorization vulnerability in wpzoom Social Icons Widget & Block – Social Media Icons & Share Buttons, published on 13 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-4063 in the wild and no public exploit code.

Affected product: wpzoom Social Icons Widget & Block – Social Media Icons & Share Buttons. 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-2026-4063/ (Markdown: https://insights.sbomify.com/CVE-2026-4063/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4063
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4063
- OSV: https://osv.dev/vulnerability/CVE-2026-4063

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4063/
Summaries are generated and may contain mistakes; the official description above is the record.