How severe is CVE-2026-44937?

CVE-2026-44937 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2026-44937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44937?

CVE-2026-44937 affects Suse Rancher Fleet. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44937?

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-2026-44937 published?

CVE-2026-44937 was published on 2026-07-06 and last updated on 2026-07-09.

CVE-2026-44937

CVE-2026-44937 is a high-severity vulnerability in Suse Rancher Fleet with a CVSS 3.x base score of 8.2. 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-918.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v4: 8.3
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Suse Rancher Fleet
Published: 2026-07-06
Last modified: 2026-07-09

Description

Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system.

Frequently asked questions

What is CVE-2026-44937?: Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system.
How severe is CVE-2026-44937?: CVE-2026-44937 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2026-44937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44937?: CVE-2026-44937 affects Suse Rancher Fleet. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44937?: 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-2026-44937 published?: CVE-2026-44937 was published on 2026-07-06 and last updated on 2026-07-09.

References

https://github.com/rancher/fleet/security/advisories/GHSA-jmf4-m7j9-g72r

Affected products (1)

cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*

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