# CVE-2023-34194: Denial of service in n/a

> A crafted XML document triggers a reachable assertion in TinyXML, causing the application to exit and resulting in a denial of service.

- **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:** 13 Dec 2023
- **Updated:** 4 Nov 2025
- **Also known as:** DEBIAN-CVE-2023-34194, DLA-3701-1, GHSA-h738-v27m-f6mw, MGASA-2024-0014, OESA-2024-2583, SUSE-SU-2023:4958-1, UBUNTU-CVE-2023-34194, USN-6612-1

## What is CVE-2023-34194?

CVE-2023-34194 is a high-severity denial of service vulnerability in n/a, published on 13 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

StringEqual in TiXmlDeclaration::Parse in tinyxmlparser.cpp in TinyXML through 2.6.2 has a reachable assertion (and application exit) via a crafted XML document with a '\0' located after whitespace.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2023-34194?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `tinyxml` | SUSE:Linux Enterprise Module for Package Hub 15 SP5 | All versions | 2.6.2-150000.3.6.1 |
| `tinyxml` | openSUSE:Leap 15.4 | All versions | 2.6.2-150000.3.6.1 |
| `tinyxml` | openSUSE:Leap 15.5 | All versions | 2.6.2-150000.3.6.1 |

Products: Tinyxml Project Tinyxml.

## How do I fix CVE-2023-34194?

Apply the vendor's patch.

## Is CVE-2023-34194 being exploited?

There is no known exploitation of CVE-2023-34194 in the wild and no public exploit code.

Public exploit code:

- TinyXML 2.6.2 with fixes for CVE-2021-42260 and CVE-2023-34194 (github_poc): https://github.com/vm2mv/tinyxml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34194 and fix it if it is affected.

What it is: CVE-2023-34194 is a high-severity denial of service vulnerability in n/a, published on 13 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-2023-34194 in the wild and no public exploit code.

Affected product: n/a. 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-2023-34194/ (Markdown: https://insights.sbomify.com/CVE-2023-34194/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34194
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34194
- OSV: https://osv.dev/vulnerability/CVE-2023-34194

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34194/
Summaries are generated and may contain mistakes; the official description above is the record.