How severe is CVE-2025-0588?

CVE-2025-0588 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-0588 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-0588?

CVE-2025-0588 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-0588?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-0588 have an EU (EUVD) identifier?

Yes. CVE-2025-0588 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1783.

When was CVE-2025-0588 published?

CVE-2025-0588 was published on 2025-02-11 and last updated on 2026-06-17.

CVE-2025-0588

CVE-2025-0588 is a medium-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 4.9. 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-113.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
CVSS v4: 5.9
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-1783
Weakness: CWE-113
Affected product: Octopus Octopus Server
Published: 2025-02-11
Last modified: 2026-06-17

Description

In affected versions of Octopus Server it was possible for a user with sufficient access to set custom headers in all server responses. By submitting a specifically crafted referrer header the user could ensure that all subsequent server responses would return 500 errors rendering the site mostly unusable. The user would be able to subsequently set and unset the referrer header to control the denial of service state with a valid CSRF token whilst new CSRF tokens could not be generated.

Frequently asked questions

What is CVE-2025-0588?: In affected versions of Octopus Server it was possible for a user with sufficient access to set custom headers in all server responses. By submitting a specifically crafted referrer header the user could ensure that all subsequent server responses would return 500 errors rendering the site mostly unusable. The user would be able to subsequently set and unset the referrer header to control the denial of service state with a valid CSRF token whilst new CSRF tokens could not be generated.
How severe is CVE-2025-0588?: CVE-2025-0588 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-0588 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-0588?: CVE-2025-0588 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-0588?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-0588 have an EU (EUVD) identifier?: Yes. CVE-2025-0588 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1783.
When was CVE-2025-0588 published?: CVE-2025-0588 was published on 2025-02-11 and last updated on 2026-06-17.

References

Affected products (1)

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

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