# CVE-2023-35839: Solon vulnerable to deserialization of untrusted data

> Attackers can execute arbitrary code via crafted payloads in the sofa-hessian component of Solon due to a deserialization bypass.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Jun 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-7q8c-49f4-4c8q

## What is CVE-2023-35839?

CVE-2023-35839 is a critical unsafe deserialization vulnerability in n/a, published on 19 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A bypass in the component sofa-hessian of Solon before v2.3.3 allows attackers to execute arbitrary code via providing crafted payload.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2023-35839?

2 open source packages ship an affected version, including org.noear:solon. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.noear:solon` | Maven | All versions | 2.3.3 |
| `org.noear:solon` | Maven | All versions | 2.3.3 |

Products: Solon Solon.

## How do I fix CVE-2023-35839?

Upgrade org.noear:solon to 2.3.3 or later.

## Is CVE-2023-35839 being exploited?

There is no known exploitation of CVE-2023-35839 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-35839 and fix it if it is affected.

What it is: CVE-2023-35839 is a critical unsafe deserialization vulnerability in n/a, published on 19 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-35839 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.noear:solon (Maven): affected all versions; fixed in 2.3.3
- org.noear:solon (Maven): affected all versions; fixed in 2.3.3

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-2023-35839/ (Markdown: https://insights.sbomify.com/CVE-2023-35839/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-35839
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-35839
- OSV: https://osv.dev/vulnerability/CVE-2023-35839

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-35839/
Summaries are generated and may contain mistakes; the official description above is the record.