# CVE-2022-23460: Stack overflow in Jsonxx

> A stack overflow in the jsonxx library can cause a denial of service in ASAN builds, requiring users to replace the archived library.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/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:** No
- **Published:** 19 Aug 2022
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-h8mv-q3c4-8hw2

## What is CVE-2022-23460?

CVE-2022-23460 is a medium-severity denial of service vulnerability in hjiang Jsonxx, published on 19 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Jsonxx or Json++ is a JSON parser, writer and reader written in C++. In affected versions of jsonxx json parsing may lead to stack exhaustion in an address sanitized (ASAN) build. This issue may lead to Denial of Service if the program using the jsonxx library crashes. This issue exists on the current commit of the jsonxx project and the project itself has been archived. Updates are not expected. Users are advised to find a replacement.

Weakness: CWE-674 (Uncontrolled Recursion), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2022-23460?

It affects 1 product.


Products: Hjiang Json\+\+.

## How do I fix CVE-2022-23460?

No fix has been published for CVE-2022-23460 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-23460 being exploited?

There is no known exploitation of CVE-2022-23460 in the wild and no public exploit code.

## Other vulnerabilities in hjiang Jsonxx

- [CVE-2022-23459](https://insights.sbomify.com/CVE-2022-23459/): Double free or Use after Free in Value class of Jsonxx (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-23460 and fix it if it is affected.

What it is: CVE-2022-23460 is a medium-severity denial of service vulnerability in hjiang Jsonxx, published on 19 Aug 2022. 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-2022-23460 in the wild and no public exploit code.

Affected product: hjiang Jsonxx. 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-2022-23460/ (Markdown: https://insights.sbomify.com/CVE-2022-23460/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-23460
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-23460
- OSV: https://osv.dev/vulnerability/CVE-2022-23460

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-23460/
Summaries are generated and may contain mistakes; the official description above is the record.