# CVE-2023-51075: hutool-core discovered to contain an infinite loop in the StrSplitter.splitByRegex function

> Attackers can cause a Denial of Service in hutool-core by triggering an infinite loop in the string splitting function.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 27 Dec 2023
- **Updated:** 17 Apr 2025
- **Also known as:** GHSA-7m7h-rgvp-3v4r

## What is CVE-2023-51075?

CVE-2023-51075 is a high-severity denial of service vulnerability in n/a, published on 27 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

hutool-core v5.8.23 was discovered to contain an infinite loop in the StrSplitter.splitByRegex function. This vulnerability allows attackers to cause a Denial of Service (DoS) via manipulation of the first two parameters.

Weakness: CWE-835 (Loop with Unreachable Exit Condition)

## Which versions are affected by CVE-2023-51075?

2 open source packages ship an affected version, including cn.hutool:hutool-core. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `cn.hutool:hutool-core` | Maven | All versions | 5.8.24 |
| `cn.hutool:hutool-core` | Maven | All versions | 5.8.24 |

Products: Hutool Hutool.

## How do I fix CVE-2023-51075?

Upgrade cn.hutool:hutool-core to 5.8.24 or later.

## Is CVE-2023-51075 being exploited?

There is no known exploitation of CVE-2023-51075 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-42276](https://insights.sbomify.com/CVE-2023-42276/): hutool Buffer Overflow vulnerability (critical 9.8)
- [CVE-2023-42277](https://insights.sbomify.com/CVE-2023-42277/): hutool Buffer Overflow vulnerability (critical 9.8)
- [CVE-2023-24162](https://insights.sbomify.com/CVE-2023-24162/): Dromara Hutool Deserialization of Untrusted Data vulnerability (critical 9.8)
- [CVE-2023-24163](https://insights.sbomify.com/CVE-2023-24163/): Dromara hutool vulnerable to SQL Injection (critical 9.8)
- [CVE-2022-22885](https://insights.sbomify.com/CVE-2022-22885/): Improper Certificate Validation in Hutool (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-51075 and fix it if it is affected.

What it is: CVE-2023-51075 is a high-severity denial of service vulnerability in n/a, published on 27 Dec 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-2023-51075 in the wild and no public exploit code.

Affected packages and fixed versions:
- cn.hutool:hutool-core (Maven): affected all versions; fixed in 5.8.24
- cn.hutool:hutool-core (Maven): affected all versions; fixed in 5.8.24

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-2023-51075/ (Markdown: https://insights.sbomify.com/CVE-2023-51075/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-51075
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-51075
- OSV: https://osv.dev/vulnerability/CVE-2023-51075

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-51075/
Summaries are generated and may contain mistakes; the official description above is the record.