# CVE-2026-73282: Use after free in OpenSSH

> A use-after-free in OpenSSH allows attackers to potentially execute code or cause denial of service via concurrent remote-forwarding operations.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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:** 11 Aug 2026
- **Updated:** 11 Aug 2026
- **Also known as:** ALPINE-CVE-2026-73282, AZL-95538, BELL-CVE-2026-73282, CLSA-2026-1788885099, CLSA-2026-1788942428, CLSA-2026-1788942887, CLSA-2026-1789043944, CLSA-2026-1789376654, CLSA-2026-1789380838, CLSA-2026-1789391814, CLSA-2026-1790070780, CLSA-2026-1790071824, CLSA-2026-1790071932, DEBIAN-CVE-2026-73282, ECHO-2431-73e5-e8c0, GHSA-jwc3-6qvm-4r66, JLSEC-2026-1328, UBUNTU-CVE-2026-73282

## What is CVE-2026-73282?

CVE-2026-73282 is a medium-severity use after free vulnerability in OpenSSH, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2026-73282?

It affects 1 product.


Products: OpenSSH.

## How do I fix CVE-2026-73282?

Upgrade to a fixed version.

## Is CVE-2026-73282 being exploited?

There is no known exploitation of CVE-2026-73282 in the wild and no public exploit code.

## Other vulnerabilities in OpenSSH

- [CVE-2003-0786](https://insights.sbomify.com/CVE-2003-0786/): Auth bypass in n/a (critical 10.0)
- [CVE-2003-0693](https://insights.sbomify.com/CVE-2003-0693/): Memory corruption in n/a (critical 10.0)
- [CVE-2002-0640](https://insights.sbomify.com/CVE-2002-0640/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0144](https://insights.sbomify.com/CVE-2001-0144/): Integer overflow in n/a (critical 10.0)
- [CVE-2000-0999](https://insights.sbomify.com/CVE-2000-0999/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73282 and fix it if it is affected.

What it is: CVE-2026-73282 is a medium-severity use after free vulnerability in OpenSSH, published on 11 Aug 2026. 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-2026-73282 in the wild and no public exploit code.

Affected product: OpenSSH. 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-2026-73282/ (Markdown: https://insights.sbomify.com/CVE-2026-73282/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73282
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73282
- OSV: https://osv.dev/vulnerability/CVE-2026-73282

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73282/
Summaries are generated and may contain mistakes; the official description above is the record.