CVE-2026-44467: The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions si

Routine

MEDIUM 6.8UPGRADE

CVE-2026-44467 is a medium-severity flaw (CVSS 6.8) affecting claude desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in ~/.ssh/known_hosts without comparing the server's presented host key against the stored key. This allowed a network-positioned attacker to present an arbitrary SSH host key and have the connection silen

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-297, CWE-322
Published	2026-05-13
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: anthropic

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-13 16:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

anthropic claude desktop UPGRADE

Affected: >= 1.2581.0 and < 1.4304.0

Fixed in: 1.4304.0

Safe to downgrade to: a release before 1.2581.0

1. Check installed version

apt-cache policy claude-desktop || rpm -q claude-desktop || claude-desktop --version

2. UPGRADE to 1.4304.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade claude-desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade claude-desktop

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.2581.0 (Debian / Ubuntu)

apt-cache madison claude-desktop sudo apt install claude-desktop=<VERSION_BEFORE_1.2581.0> sudo apt-mark hold claude-desktop

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list claude-desktop sudo dnf downgrade claude-desktop-<VERSION_BEFORE_1.2581.0> sudo dnf versionlock add claude-desktop

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44467?

claude desktop: upgrade to 1.4304.0. Exact commands for each OS are on this page.

Is CVE-2026-44467 being exploited?

CVE-2026-44467 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44467 affect?

CVE-2026-44467 affects claude desktop. Severity is medium (CVSS 6.8). The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname exi

How urgent is CVE-2026-44467?

Priority 25/100. No elevated risk signals yet.

Related CVEs

CVE-2026-44470 HIGH 7.8 UPGRADE The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions si

References

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