# CVE-2023-46219: Security feature bypass in curl

> Attackers can bypass HSTS protections by triggering data loss in curl's HSTS cache, allowing subsequent requests to ignore secure transport requirements.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 12 Dec 2023
- **Updated:** 15 Oct 2026
- **Also known as:** ALPINE-CVE-2023-46219, AZL-32120, AZL-32125, AZL-35020, AZL-35781, BELL-CVE-2023-46219, CLEANSTART-2026-IK89026, CURL-CVE-2023-46219, DEBIAN-CVE-2023-46219, ECHO-3eeb-062d-3b22, GHSA-fj44-3xpp-9cx2, JLSEC-2026-1343, OESA-2023-1958, OESA-2023-1959, OESA-2023-1960, OESA-2023-1961, OESA-2023-1962, ROOT-OS-DEBIAN-11-CVE-2023-46219, UBUNTU-CVE-2023-46219

## What is CVE-2023-46219?

CVE-2023-46219 is a medium-severity vulnerability in Fedoraproject Fedora, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

When saving HSTS data to an excessively long file name, curl could end up
removing all contents, making subsequent requests using that file unaware of
the HSTS status they should otherwise use.

Weakness: CWE-311 (Missing Encryption of Sensitive Data)

## Which versions are affected by CVE-2023-46219?

It affects 2 products.


Products: Fedoraproject Fedora, Haxx Curl.

## How do I fix CVE-2023-46219?

Upgrade to a fixed version.

## Is CVE-2023-46219 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-46219 exists.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-46219 and fix it if it is affected.

What it is: CVE-2023-46219 is a medium-severity vulnerability in Fedoraproject Fedora, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-46219 exists.

Affected product: Fedoraproject Fedora. 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-2023-46219/ (Markdown: https://insights.sbomify.com/CVE-2023-46219/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-46219
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-46219
- OSV: https://osv.dev/vulnerability/CVE-2023-46219

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-46219/
Summaries are generated and may contain mistakes; the official description above is the record.