# CVE-2025-2690: yiisoft Yii2 MockClass.php generate deserialization

> Remote attackers can exploit unsafe deserialization in Yii2's MockClass to execute arbitrary code, requiring immediate framework upgrades.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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:** No
- **Published:** 24 Mar 2025
- **Updated:** 24 Mar 2025
- **Also known as:** GHSA-97q7-cqc5-x5gj

## What is CVE-2025-2690?

CVE-2025-2690 is a medium-severity unsafe deserialization vulnerability in yiisoft Yii2, published on 24 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, was found in yiisoft Yii2 up to 2.0.39. This affects the function Generate of the file phpunit\src\Framework\MockObject\MockClass.php. The manipulation leads to deserialization. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-502 (Deserialization of Untrusted Data), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-2690?

It affects 1 product.


Products: Yiiframework Yii.

## How do I fix CVE-2025-2690?

No fix has been published for CVE-2025-2690 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-2690 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2690 exists.

## Other vulnerabilities in yiisoft Yii2

- [CVE-2024-58136](https://insights.sbomify.com/CVE-2024-58136/): Yiiframework Yii Improper Protection of Alternate Path (critical 9.0, exploited in the wild)
- [CVE-2015-5467](https://insights.sbomify.com/CVE-2015-5467/): Yii2 allows attackers to execute any local .php file via a relative path in the view parameter (critical 9.8)
- [CVE-2023-26750](https://insights.sbomify.com/CVE-2023-26750/): SQL injection in n/a (critical 9.8)
- [CVE-2018-7269](https://insights.sbomify.com/CVE-2018-7269/): Yii SQL injection vulnerability (critical 9.8)
- [CVE-2018-8073](https://insights.sbomify.com/CVE-2018-8073/): yii2-redis Potential Remote code execution (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-2690 and fix it if it is affected.

What it is: CVE-2025-2690 is a medium-severity unsafe deserialization vulnerability in yiisoft Yii2, published on 24 Mar 2025. 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-2025-2690 exists.

Affected product: yiisoft Yii2. 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-2025-2690/ (Markdown: https://insights.sbomify.com/CVE-2025-2690/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-2690
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-2690
- OSV: https://osv.dev/vulnerability/CVE-2025-2690

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-2690/
Summaries are generated and may contain mistakes; the official description above is the record.