# CVE-2022-42915: Use after free in n/a

> A double free vulnerability in curl allows attackers to cause denial of service or potentially execute code when using specific URL schemes with an HTTP proxy.

- **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:** Yes
- **Published:** 29 Oct 2022
- **Updated:** 14 Oct 2026
- **Also known as:** ALPINE-CVE-2022-42915, AZL-11368, AZL-38185, CLEANSTART-2026-JO97446, CURL-CVE-2022-42915, DEBIAN-CVE-2022-42915, GHSA-98w6-hw73-ph8m, JLSEC-2026-398, UBUNTU-CVE-2022-42915

## What is CVE-2022-42915?

CVE-2022-42915 is a high-severity use after free vulnerability in Apple Macos, published on 29 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2022-42915?

It affects 9 products.


Products: Apple Macos, Fedoraproject Fedora, Haxx Curl, Netapp H300s Firmware, Netapp H410s Firmware, Netapp H500s Firmware, Netapp H700s Firmware, Netapp Ontap 9, Splunk Universal Forwarder.

## How do I fix CVE-2022-42915?

Upgrade to a fixed version.

## Is CVE-2022-42915 being exploited?

There is no known exploitation of CVE-2022-42915 in the wild and no public exploit code.

## Other vulnerabilities in Apple Macos

- [CVE-2026-65400](https://insights.sbomify.com/CVE-2026-65400/): Apple macOS Improper Authentication (critical 9.8, exploited in the wild)
- [CVE-2024-44146](https://insights.sbomify.com/CVE-2024-44146/): Security feature bypass in macOS (critical 10.0)
- [CVE-2024-44148](https://insights.sbomify.com/CVE-2024-44148/): Security feature bypass in macOS (critical 10.0)
- [CVE-2023-38586](https://insights.sbomify.com/CVE-2023-38586/): Security feature bypass in macOS (critical 10.0)
- [CVE-2023-40455](https://insights.sbomify.com/CVE-2023-40455/): Security feature bypass in macOS (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-42915 and fix it if it is affected.

What it is: CVE-2022-42915 is a high-severity use after free vulnerability in Apple Macos, published on 29 Oct 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-2022-42915 in the wild and no public exploit code.

Affected product: Apple Macos. 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-2022-42915/ (Markdown: https://insights.sbomify.com/CVE-2022-42915/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-42915
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-42915
- OSV: https://osv.dev/vulnerability/CVE-2022-42915

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-42915/
Summaries are generated and may contain mistakes; the official description above is the record.