# CVE-2026-82394: Sulu: Fix authorization bypass when creating preview links

> Authenticated users can generate public preview links for restricted content, allowing unauthorized data access without proper permission checks.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 31 Aug 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-65cv-w493-7vhq

## What is CVE-2026-82394?

CVE-2026-82394 is a medium-severity missing authorization vulnerability in sulu, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Sulu is an open-source PHP content management system based on the Symfony framework. Prior to versions 2.6.25 and 3.0.8, the preview-link endpoint and src/Sulu/Bundle/PreviewBundle/Application/Manager/PreviewLinkManager.php do not enforce VIEW permission for the target resource in PreviewLinkManager::generate() or PreviewLinkManager::revoke(). An authenticated administration user who knows a target resource identifier can create or revoke a preview link for any page, article, or snippet, including content in a webspace or area the user cannot view. A generated preview URL is public and resolves content by an opaque token, allowing the user or anyone receiving the link to read restricted content without authentication. This issue is fixed in versions 2.6.25 and 3.0.8.

Weakness: CWE-863 (Incorrect Authorization), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-82394?

4 open source packages ship an affected version, including sulu/sulu.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `sulu/sulu` | Packagist | All versions | 2.6.25 |
| `sulu/sulu` | Packagist | All versions | 2.6.25 |
| `sulu/sulu` | Packagist | From 3.0.0-alpha1 | 3.0.8 |
| `sulu/sulu` | Packagist | From 3.0.0-alpha1 | 3.0.8 |

## How do I fix CVE-2026-82394?

Upgrade sulu/sulu to a fixed version for your release line: 2.6.25 or 3.0.8.

## Is CVE-2026-82394 being exploited?

There is no known exploitation of CVE-2026-82394 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82394 and fix it if it is affected.

What it is: CVE-2026-82394 is a medium-severity missing authorization vulnerability in sulu, published on 31 Aug 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-2026-82394 in the wild and no public exploit code.

Affected packages and fixed versions:
- sulu/sulu (Packagist): affected all versions; fixed in 2.6.25
- sulu/sulu (Packagist): affected all versions; fixed in 2.6.25
- sulu/sulu (Packagist): affected from 3.0.0-alpha1; fixed in 3.0.8
- sulu/sulu (Packagist): affected from 3.0.0-alpha1; fixed in 3.0.8

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-2026-82394/ (Markdown: https://insights.sbomify.com/CVE-2026-82394/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82394
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82394
- OSV: https://osv.dev/vulnerability/CVE-2026-82394

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82394/
Summaries are generated and may contain mistakes; the official description above is the record.