How severe is CVE-2026-106583?

CVE-2026-106583 has a CVSS score of 2.5/10, rated LOW. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2026-106583?

Affected package information for CVE-2026-106583 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2026-106583?

No fixed release is recorded for CVE-2026-106583 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

How do I detect CVE-2026-106583 in my code and dependencies?

Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

How do I mitigate CVE-2026-106583 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2026-106583 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-106583 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-106583?

CVE-2026-106583 has an EPSS (Exploit Prediction Scoring System) score of 0.1%, placing it in the 2th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-106583?

CVE-2026-106583 is classified as CWE-99 (CWE-99). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-106583 published, and has it been updated?

CVE-2026-106583 was published on October 7, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

Not in CISA KEV

LOW severity

CVE-2026-106583

LOW

CVE-2026-106583 is a low-severity (CVSS 2.5) CWE-99 vulnerability. No vendor fix is recorded yet; mitigation options are listed below.

In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.

Published

Oct 7, 2026

Updated

Oct 7, 2026

Affected

1 product

Patched

See advisory

Exploits

None indexed

Exploitation data as of Oct 13, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs2th percentile — riskier than 2% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-106583 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Description

In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.

Affected Products

1 product · 1 configurations

Application

opensshopenbsd

< 10.6

range

Detection & mitigation playbook

Vulnerability

Detect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Remediation status
No fixed release is recorded for CVE-2026-106583 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.

O3 Security · Impact-Aware SCA

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CVE-2026-106583

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Description

Affected Products

Detection & mitigation playbook

Detect

Remediation status

Mitigate without a patch

Frequently Asked Questions

Is CVE-2026-106583 in your dependencies?