# CVE-2023-3276: Dromara HuTool XML Parsing Module XmlUtil.java readBySax xml external entity reference

> Attackers can exploit XML external entity injection in HuTool's SAX parser to read sensitive files or cause denial of service.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jun 2023
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-p2qf-9vp6-3jjq

## What is CVE-2023-3276?

CVE-2023-3276 is a medium-severity vulnerability in Dromara HuTool, published on 15 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability, which was classified as problematic, has been found in Dromara HuTool up to 5.8.19. Affected by this issue is the function readBySax of the file XmlUtil.java of the component XML Parsing Module. The manipulation leads to xml external entity reference. The exploit has been disclosed to the public and may be used. VDB-231626 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2023-3276?

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 to 5.8.19 | None |
| `cn.hutool:hutool-core` | Maven | All versions to 5.8.19 | None |

Products: Dromara Hutool.

## How do I fix CVE-2023-3276?

No fix has been published for CVE-2023-3276 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-3276 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3276 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-3276 and fix it if it is affected.

What it is: CVE-2023-3276 is a medium-severity vulnerability in Dromara HuTool, published on 15 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3276 exists.

Affected packages and fixed versions:
- cn.hutool:hutool-core (Maven): affected all versions up to 5.8.19; no fix listed
- cn.hutool:hutool-core (Maven): affected all versions up to 5.8.19; no fix listed

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-2023-3276/ (Markdown: https://insights.sbomify.com/CVE-2023-3276/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3276
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3276
- OSV: https://osv.dev/vulnerability/CVE-2023-3276

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3276/
Summaries are generated and may contain mistakes; the official description above is the record.