# CVE-2026-27741: Bludit <= 3.16.1 CSRF in Plugin and Theme Management Endpoints

> Attackers can trick admins into installing malicious themes or uninstalling plugins via CSRF, leading to code execution and system compromise.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 23 Feb 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-xw6c-ffpm-fgcm

## What is CVE-2026-27741?

CVE-2026-27741 is a medium-severity vulnerability in Bludit, published on 23 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Bludit version 3.16.1 contains a cross-site request forgery (CSRF) vulnerability in the /admin/uninstall-plugin/ and /admin/install-theme/ endpoints. The application does not implement anti-CSRF tokens or other request origin validation mechanisms for these administrative actions. An attacker can induce an authenticated administrator to visit a malicious page that silently submits crafted requests, resulting in unauthorized plugin uninstallation or theme installation. This may lead to loss of functionality, execution of untrusted code via malicious themes, and compromise of system integrity.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-27741?

It affects 1 product.


Products: Bludit Bludit.

## How do I fix CVE-2026-27741?

No fix has been published for CVE-2026-27741 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-27741 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27741 exists.

## Other vulnerabilities in Bludit

- [CVE-2020-18879](https://insights.sbomify.com/CVE-2020-18879/): File upload in n/a (critical 9.8)
- [CVE-2020-20495](https://insights.sbomify.com/CVE-2020-20495/): Path traversal in n/a (critical 9.1)
- [CVE-2020-18190](https://insights.sbomify.com/CVE-2020-18190/): Path traversal in n/a (critical 9.1)
- [CVE-2024-24550](https://insights.sbomify.com/CVE-2024-24550/): Bludit - Remote Code Execution (RCE) through File API (high 8.9)
- [CVE-2024-24551](https://insights.sbomify.com/CVE-2024-24551/): Bludit - Remote Code Execution (RCE) through Image API (high 8.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27741 and fix it if it is affected.

What it is: CVE-2026-27741 is a medium-severity vulnerability in Bludit, published on 23 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27741 exists.

Affected product: Bludit. 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-2026-27741/ (Markdown: https://insights.sbomify.com/CVE-2026-27741/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27741
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27741
- OSV: https://osv.dev/vulnerability/CVE-2026-27741

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-27741/
Summaries are generated and may contain mistakes; the official description above is the record.