# CVE-2022-40468: Information disclosure in n/a

> Attackers can read uninitialized heap data if custom error templates with special variables are used in Tinyproxy.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Sep 2022
- **Updated:** 4 Nov 2025
- **Also known as:** ALPINE-CVE-2022-40468, CVE-2023-40533, DEBIAN-CVE-2022-40468, GHSA-h3r7-x4mp-2c39, UBUNTU-CVE-2022-40468, USN-7140-1, USN-7140-2, openSUSE-SU-2024:12351-1

## What is CVE-2022-40468?

CVE-2022-40468 is a high-severity vulnerability in n/a, published on 19 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. Tinyproxy commit 84f203f and earlier use uninitialized buffers in process_request() function.

Weakness: CWE-1188 (Initialization of a Resource with an Insecure Default)

## Which versions are affected by CVE-2022-40468?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `tinyproxy` | openSUSE:Tumbleweed | All versions | 1.11.1-2.1 |

Products: Tinyproxy Project Tinyproxy.

## How do I fix CVE-2022-40468?

Apply the vendor's patch.

## Is CVE-2022-40468 being exploited?

There is no known exploitation of CVE-2022-40468 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-49606](https://insights.sbomify.com/CVE-2023-49606/): Use after free in Tinyproxy (critical 9.8)
- [CVE-2026-31842](https://insights.sbomify.com/CVE-2026-31842/): Tinyproxy HTTP request parsing desynchronization via case-sensitive Transfer-Encoding handling (high 8.7)
- [CVE-2025-63938](https://insights.sbomify.com/CVE-2025-63938/): Integer overflow in n/a (medium 6.5)
- [CVE-2017-11747](https://insights.sbomify.com/CVE-2017-11747/): Privilege escalation in n/a (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-40468 and fix it if it is affected.

What it is: CVE-2022-40468 is a high-severity vulnerability in n/a, published on 19 Sep 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-2022-40468 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-2022-40468/ (Markdown: https://insights.sbomify.com/CVE-2022-40468/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-40468
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-40468
- OSV: https://osv.dev/vulnerability/CVE-2022-40468

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-40468/
Summaries are generated and may contain mistakes; the official description above is the record.