# CVE-2024-14031: Sereal::Encoder versions from 4.000 through 4.009_002 for Perl embeds a vulnerable version of the Zstandard library

> An attacker can exploit a race condition in the embedded Zstandard library to cause out-of-bounds writes, potentially leading to code execution or crashes.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/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:** No
- **Published:** 31 Mar 2026
- **Updated:** 1 Apr 2026
- **Also known as:** GHSA-hhqv-q79g-jgfm

## What is CVE-2024-14031?

CVE-2024-14031 is a high-severity vulnerability in YVES Sereal::Encoder, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Sereal::Encoder versions from 4.000 through 4.009_002 for Perl embeds a vulnerable version of the Zstandard library.

Sereal::Encoder embeds a version of the Zstandard (zstd) library that is vulnerable to CVE-2019-11922.  This is a race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used.

Weakness: CWE-787 (Out-of-bounds Write), CWE-1395 (Dependency on Vulnerable Third-Party Component)

## Which versions are affected by CVE-2024-14031?

It affects 1 product.


Products: Yves Sereal\.

## How do I fix CVE-2024-14031?

No fix has been published for CVE-2024-14031 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-14031 being exploited?

There is no known exploitation of CVE-2024-14031 in the wild and no public exploit code.

## Other vulnerabilities in YVES Sereal::Encoder

- [CVE-2024-14030](https://insights.sbomify.com/CVE-2024-14030/): Sereal::Decoder versions from 4.000 through 4.009_002 for Perl embeds a vulnerable version of the Zstandard library (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-14031 and fix it if it is affected.

What it is: CVE-2024-14031 is a high-severity vulnerability in YVES Sereal::Encoder, published on 31 Mar 2026. 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-2024-14031 in the wild and no public exploit code.

Affected product: YVES Sereal::Encoder. 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-2024-14031/ (Markdown: https://insights.sbomify.com/CVE-2024-14031/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-14031
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-14031
- OSV: https://osv.dev/vulnerability/CVE-2024-14031

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-14031/
Summaries are generated and may contain mistakes; the official description above is the record.