# CVE-2024-37883: Nextcloud Deck can access comments and attachments of deleted cards

> Users with board access can view comments and attachments of deleted cards, exposing sensitive data.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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:** 14 Jun 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-x45g-vx69-r9m8

## What is CVE-2024-37883?

CVE-2024-37883 is a medium-severity missing authorization vulnerability in nextcloud security-advisories, published on 14 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. A user with access to a deck board was able to access comments and attachments of already deleted cards. It is recommended that the Nextcloud Deck app is upgraded to 1.6.6 or 1.7.5 or 1.8.7 or 1.9.6 or 1.11.3 or 1.12.1.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2024-37883?

It affects 1 product.


Products: Nextcloud Deck.

## How do I fix CVE-2024-37883?

No fix has been published for CVE-2024-37883 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-37883 being exploited?

There is no known exploitation of CVE-2024-37883 in the wild and no public exploit code.

## Other vulnerabilities in nextcloud security-advisories

- [CVE-2021-39225](https://insights.sbomify.com/CVE-2021-39225/): Missing permission check on Deck API (high 8.1)
- [CVE-2020-8182](https://insights.sbomify.com/CVE-2020-8182/): Missing authorization in Nextcloud Deck (high 8.0)
- [CVE-2021-37631](https://insights.sbomify.com/CVE-2021-37631/): Circle can be accessed by non-Circle members in Nextcloud Deck (medium 6.5)
- [CVE-2021-22913](https://insights.sbomify.com/CVE-2021-22913/): Information disclosure in Nextcloud Deck (medium 6.5)
- [CVE-2023-22469](https://insights.sbomify.com/CVE-2023-22469/): Nextcloud Deck card vulnerable to data leak to unauthorized users via reference preview cache (medium 5.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-37883 and fix it if it is affected.

What it is: CVE-2024-37883 is a medium-severity missing authorization vulnerability in nextcloud security-advisories, published on 14 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-37883 in the wild and no public exploit code.

Affected product: nextcloud security-advisories. 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-2024-37883/ (Markdown: https://insights.sbomify.com/CVE-2024-37883/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-37883
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-37883
- OSV: https://osv.dev/vulnerability/CVE-2024-37883

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-37883/
Summaries are generated and may contain mistakes; the official description above is the record.