# CVE-2025-55010: Kanboard Authenticated Admin Remote Code Execution via Unsafe Deserialization of Events

> Authenticated admins can achieve remote code execution by injecting malicious PHP objects into project activity data, requiring an upgrade to Kanboard.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Aug 2025
- **Updated:** 12 Aug 2025
- **Also known as:** GHSA-359x-c69j-q64r

## What is CVE-2025-55010?

CVE-2025-55010 is a critical unsafe deserialization vulnerability in kanboard, published on 12 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.47, an unsafe deserialization vulnerability in the ProjectEventActvityFormatter allows admin users the ability to instantiate arbitrary php objects by modifying the event["data"] field in the project_activities table. A malicious actor can update this field to use a php gadget to write a web shell into the /plugins folder, which then gives remote code execution on the host system. This issue has been patched in version 1.2.47.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2025-55010?

It affects 1 product.


Products: Kanboard Kanboard.

## How do I fix CVE-2025-55010?

No fix has been published for CVE-2025-55010 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-55010 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55010 exists.

## Other vulnerabilities in kanboard

- [CVE-2026-21881](https://insights.sbomify.com/CVE-2026-21881/): Kanboard is Vulnerable to Reverse Proxy Authentication Bypass (critical 9.1)
- [CVE-2024-51747](https://insights.sbomify.com/CVE-2024-51747/): Arbitrary File Read and Delete in kanboard (critical 9.1)
- [CVE-2024-51748](https://insights.sbomify.com/CVE-2024-51748/): Remote code execution through language setting in kanboard (critical 9.1)
- [CVE-2017-12850](https://insights.sbomify.com/CVE-2017-12850/): Business logic in n/a (high 8.8)
- [CVE-2017-12851](https://insights.sbomify.com/CVE-2017-12851/): Business logic in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-55010 and fix it if it is affected.

What it is: CVE-2025-55010 is a critical unsafe deserialization vulnerability in kanboard, published on 12 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55010 exists.

Affected product: kanboard. 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-2025-55010/ (Markdown: https://insights.sbomify.com/CVE-2025-55010/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-55010
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55010
- OSV: https://osv.dev/vulnerability/CVE-2025-55010

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-55010/
Summaries are generated and may contain mistakes; the official description above is the record.