How severe is CVE-2026-3236?

CVE-2026-3236 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-3236 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3236?

CVE-2026-3236 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3236?

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

Does CVE-2026-3236 have an EU (EUVD) identifier?

Yes. CVE-2026-3236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9817.

When was CVE-2026-3236 published?

CVE-2026-3236 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-3236

CVE-2026-3236 is a medium-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 4.3. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 2.3
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9817
Weakness: CWE-863
Affected product: Octopus Octopus Server
Published: 2026-03-05
Last modified: 2026-06-17

Description

In affected versions of Octopus Server it was possible to create a new API key from an existing access token resulting in the new API key having a lifetime exceeding the original API key used to mint the access token.

Frequently asked questions

What is CVE-2026-3236?: In affected versions of Octopus Server it was possible to create a new API key from an existing access token resulting in the new API key having a lifetime exceeding the original API key used to mint the access token.
How severe is CVE-2026-3236?: CVE-2026-3236 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-3236 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3236?: CVE-2026-3236 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3236?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3236 have an EU (EUVD) identifier?: Yes. CVE-2026-3236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9817.
When was CVE-2026-3236 published?: CVE-2026-3236 was published on 2026-03-05 and last updated on 2026-06-17.

References

https://advisories.octopus.com/post/2026/sa2026-02

Affected products (1)

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

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