# CVE-2025-13725: Gutenberg Thim Blocks <= 1.0.1 - Authenticated (Contributor+) Arbitrary File Read via 'iconSVG' Parameter

> Authenticated contributors can read arbitrary server files via the iconSVG parameter in the Thim Blocks plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:** 17 Jan 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-f4rc-5m89-x55r

## What is CVE-2025-13725?

CVE-2025-13725 is a medium-severity path traversal vulnerability in thimpress Thim Blocks, published on 17 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Gutenberg Thim Blocks – Page Builder, Gutenberg Blocks for the Block Editor plugin for WordPress is vulnerable to arbitrary file reads in all versions up to, and including, 1.0.1. This is due to insufficient path validation in the server-side rendering of the thim-blocks/icon block. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the contents of arbitrary files on the server via the 'iconSVG' parameter, which can contain sensitive information such as wp-config.php.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-13725?


## How do I fix CVE-2025-13725?

No fix has been published for CVE-2025-13725 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13725 being exploited?

There is no known exploitation of CVE-2025-13725 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13725 and fix it if it is affected.

What it is: CVE-2025-13725 is a medium-severity path traversal vulnerability in thimpress Thim Blocks, published on 17 Jan 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-2025-13725 in the wild and no public exploit code.

Affected product: thimpress Thim Blocks. 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-2025-13725/ (Markdown: https://insights.sbomify.com/CVE-2025-13725/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13725
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13725
- OSV: https://osv.dev/vulnerability/CVE-2025-13725

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-13725/
Summaries are generated and may contain mistakes; the official description above is the record.