# CVE-2023-47320: Broken access control in Silverpeas

> Low-privilege attackers can trigger maintenance mode, causing denial of service for all users in Silverpeas Core.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **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:** 13 Dec 2023
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-whgv-6j78-5rh2

## What is CVE-2023-47320?

CVE-2023-47320 is a high-severity missing authorization vulnerability in n/a, published on 13 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Silverpeas Core 6.3.1 is vulnerable to Incorrect Access Control. An attacker with low privileges is able to execute the administrator-only function of putting the application in "Maintenance Mode" due to broken access control. This makes the application unavailable to all users. This affects Silverpeas Core 6.3.1 and below.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2023-47320?

4 open source packages ship an affected version, including org.silverpeas.core:silverpeas-core-war and org.silverpeas.core:silverpeas-core-web. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.silverpeas.core:silverpeas-core-war` | Maven | All versions | 6.3.2 |
| `org.silverpeas.core:silverpeas-core-war` | Maven | All versions | 6.3.2 |
| `org.silverpeas.core:silverpeas-core-web` | Maven | All versions | 6.3.2 |
| `org.silverpeas.core:silverpeas-core-web` | Maven | All versions | 6.3.2 |

Products: Silverpeas Silverpeas.

## How do I fix CVE-2023-47320?

Upgrade org.silverpeas.core:silverpeas-core-war to 6.3.2 or later.

## Is CVE-2023-47320 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-47320 exists.

## Other vulnerabilities in n/a

- [CVE-2018-19586](https://insights.sbomify.com/CVE-2018-19586/): Path traversal in n/a (critical 9.9)
- [CVE-2024-42850](https://insights.sbomify.com/CVE-2024-42850/): Silverpeas vulnerable to password complexity rule bypass (critical 9.8)
- [CVE-2024-36042](https://insights.sbomify.com/CVE-2024-36042/): Silverpeas authentication bypass (critical 9.8)
- [CVE-2023-47322](https://insights.sbomify.com/CVE-2023-47322/): Cross Site Request Forgery in Silverpeas (high 8.8)
- [CVE-2023-47326](https://insights.sbomify.com/CVE-2023-47326/): Cross Site Request Forgery in Silverpeas (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-47320 and fix it if it is affected.

What it is: CVE-2023-47320 is a high-severity missing authorization vulnerability in n/a, published on 13 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-47320 exists.

Affected packages and fixed versions:
- org.silverpeas.core:silverpeas-core-war (Maven): affected all versions; fixed in 6.3.2
- org.silverpeas.core:silverpeas-core-war (Maven): affected all versions; fixed in 6.3.2
- org.silverpeas.core:silverpeas-core-web (Maven): affected all versions; fixed in 6.3.2
- org.silverpeas.core:silverpeas-core-web (Maven): affected all versions; fixed in 6.3.2

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-2023-47320/ (Markdown: https://insights.sbomify.com/CVE-2023-47320/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-47320
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-47320
- OSV: https://osv.dev/vulnerability/CVE-2023-47320

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-47320/
Summaries are generated and may contain mistakes; the official description above is the record.