How severe is CVE-2026-12878?

CVE-2026-12878 has a CVSS 3.x base score of 8.8, rated high 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 high.

Is CVE-2026-12878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-12878?

CVE-2026-12878 affects Octopus Codefresh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-12878?

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

When was CVE-2026-12878 published?

CVE-2026-12878 was published on 2026-08-25 and last updated on 2026-09-28.

CVE-2026-12878

CVE-2026-12878 is a high-severity vulnerability in Octopus Codefresh with a CVSS 3.x base score of 8.8. 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-269.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.6
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Octopus Codefresh
Published: 2026-08-25
Last modified: 2026-09-28

Description

In affected versions of the Codefresh platform an authenticated user can utilize an API endpoint to elevate to Admin permissions.

Frequently asked questions

What is CVE-2026-12878?: In affected versions of the Codefresh platform an authenticated user can utilize an API endpoint to elevate to Admin permissions.
How severe is CVE-2026-12878?: CVE-2026-12878 has a CVSS 3.x base score of 8.8, rated high 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 high.
Is CVE-2026-12878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-12878?: CVE-2026-12878 affects Octopus Codefresh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-12878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-12878 published?: CVE-2026-12878 was published on 2026-08-25 and last updated on 2026-09-28.

References

https://advisories.codefresh.io/post/2026/sa2026-01/

Affected products (1)

cpe:2.3:a:octopus:codefresh:*:*:*:*:*:*:*:*

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