# CVE-2026-5316: Nothings stb stb_vorbis.c setup_free allocation of resources

> Remote attackers can cause resource exhaustion and denial of service in the stb_vorbis library via the setup_free function.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Apr 2026
- **Updated:** 2 Apr 2026
- **Also known as:** DEBIAN-CVE-2026-5316, GHSA-pmw2-j962-7frc, UBUNTU-CVE-2026-5316

## What is CVE-2026-5316?

CVE-2026-5316 is a medium-severity denial of service vulnerability in Nothings stb, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability was identified in Nothings stb up to 1.22. The impacted element is the function setup_free of the file stb_vorbis.c. The manipulation leads to allocation of resources. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-5316?

It affects 1 product.


Products: Nothings Stb Vorbis.c.

## How do I fix CVE-2026-5316?

No fix has been published for CVE-2026-5316 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5316 being exploited?

There is no known exploitation of CVE-2026-5316 in the wild and no public exploit code.

## Other vulnerabilities in Nothings stb

- [CVE-2023-45676](https://insights.sbomify.com/CVE-2023-45676/): Multi-byte write heap buffer overflow in start_decoder in stb_vorbis (high 7.3)
- [CVE-2023-45677](https://insights.sbomify.com/CVE-2023-45677/): Heap buffer out of bounds write in start_decoder in stb_vorbis (high 7.3)
- [CVE-2023-45679](https://insights.sbomify.com/CVE-2023-45679/): Attempt to free an uninitialized memory pointer in vorbis_deinit in stb_vorbis (high 7.3)
- [CVE-2023-45681](https://insights.sbomify.com/CVE-2023-45681/): Out of bounds heap buffer write in stb_vorbis (high 7.3)
- [CVE-2023-45675](https://insights.sbomify.com/CVE-2023-45675/): 0 byte write heap buffer overflow in start_decoder in stb_vorbis (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5316 and fix it if it is affected.

What it is: CVE-2026-5316 is a medium-severity denial of service vulnerability in Nothings stb, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-5316 in the wild and no public exploit code.

Affected product: Nothings stb. 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-2026-5316/ (Markdown: https://insights.sbomify.com/CVE-2026-5316/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5316
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5316
- OSV: https://osv.dev/vulnerability/CVE-2026-5316

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5316/
Summaries are generated and may contain mistakes; the official description above is the record.