How severe is CVE-2026-0704?

CVE-2026-0704 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-0704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0704?

CVE-2026-0704 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-0704?

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-2026-0704 have an EU (EUVD) identifier?

Yes. CVE-2026-0704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8636.

When was CVE-2026-0704 published?

CVE-2026-0704 was published on 2026-02-25 and last updated on 2026-06-17.

CVE-2026-0704

CVE-2026-0704 is a critical-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 9.1. 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 9.1)
CVSS v4: 5.9
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8636
Weakness: CWE-22
Affected product: Octopus Octopus Server
Published: 2026-02-25
Last modified: 2026-06-17

Description

In affected version of Octopus Deploy it was possible to remove files and/or contents of files on the host using an API endpoint. The field lacked validation which could potentially result in ways to circumvent expected workflows.

Frequently asked questions

What is CVE-2026-0704?: In affected version of Octopus Deploy it was possible to remove files and/or contents of files on the host using an API endpoint. The field lacked validation which could potentially result in ways to circumvent expected workflows.
How severe is CVE-2026-0704?: CVE-2026-0704 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-0704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0704?: CVE-2026-0704 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0704?: 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-2026-0704 have an EU (EUVD) identifier?: Yes. CVE-2026-0704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8636.
When was CVE-2026-0704 published?: CVE-2026-0704 was published on 2026-02-25 and last updated on 2026-06-17.

References

https://advisories.octopus.com/post/2026/sa2026-01

Affected products (1)

cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*

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