# CVE-2026-114457: Mod_qos: missing nul termination in json value escaping permits out-of-bounds reads


- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 22 Oct 2026
- **Updated:** 26 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-114457, GHSA-vwh8-p4rw-9g58, UBUNTU-CVE-2026-114457

## What is CVE-2026-114457?

CVE-2026-114457 is a low-severity vulnerability in pbuchbinder mod_qos, published on 22 Oct 2026. 

### Official description

A flaw was found in mod_qos. An unauthenticated remote attacker could cause a Denial of Service (DoS) by sending a specially crafted JSON request when JSON body filtering is enabled. Due to improper string termination during the processing of percent-encoded input, the module reads past allocated memory boundaries, which can cause an Apache worker process to crash.

Weakness: CWE-170 (Improper Null Termination)

## Which versions are affected by CVE-2026-114457?


## How do I fix CVE-2026-114457?

No fix has been published for CVE-2026-114457 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-114457 being exploited?

There is no known exploitation of CVE-2026-114457 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-114457 and fix it if it is affected.

What it is: CVE-2026-114457 is a low-severity vulnerability in pbuchbinder mod_qos, published on 22 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-114457 in the wild and no public exploit code.

Affected product: pbuchbinder mod_qos. 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-2026-114457/ (Markdown: https://insights.sbomify.com/CVE-2026-114457/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-114457
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-114457
- OSV: https://osv.dev/vulnerability/CVE-2026-114457

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-114457/
Summaries are generated and may contain mistakes; the official description above is the record.