How severe is CVE-2026-41589?

CVE-2026-41589 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-41589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41589?

CVE-2026-41589 affects Charm Wish. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41589?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-41589 have an EU (EUVD) identifier?

Yes. CVE-2026-41589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28370.

When was CVE-2026-41589 published?

CVE-2026-41589 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2026-41589

CVE-2026-41589 is a critical-severity vulnerability in Charm Wish with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28370
Weakness: CWE-22
Affected product: Charm Wish
Published: 2026-05-07
Last modified: 2026-06-17

Description

Wish is an SSH server with defaults and a collection of middlewares. From version 2.0.0 to before version 2.0.1, the SCP middleware in charm.land/wish/v2 is vulnerable to path traversal attacks. A malicious SCP client can read arbitrary files from the server, write arbitrary files to the server, and create directories outside the configured root directory by sending crafted filenames containing ../ sequences over the SCP protocol. This issue has been patched in version 2.0.1.

Frequently asked questions

What is CVE-2026-41589?: Wish is an SSH server with defaults and a collection of middlewares. From version 2.0.0 to before version 2.0.1, the SCP middleware in charm.land/wish/v2 is vulnerable to path traversal attacks. A malicious SCP client can read arbitrary files from the server, write arbitrary files to the server, and create directories outside the configured root directory by sending crafted filenames containing ../ sequences over the SCP protocol. This issue has been patched in version 2.0.1.
How severe is CVE-2026-41589?: CVE-2026-41589 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-41589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41589?: CVE-2026-41589 affects Charm Wish. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41589?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-41589 have an EU (EUVD) identifier?: Yes. CVE-2026-41589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28370.
When was CVE-2026-41589 published?: CVE-2026-41589 was published on 2026-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:charm:wish:2.0.0:*:*:*:*:*:*:*

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