How severe is CVE-2026-65613?

CVE-2026-65613 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 low, integrity none, and availability none.

Is CVE-2026-65613 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-65613?

CVE-2026-65613 affects Apache Cloudstack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-65613?

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

When was CVE-2026-65613 published?

CVE-2026-65613 was published on 2026-08-21 and last updated on 2026-08-27.

CVE-2026-65613

CVE-2026-65613 is a medium-severity vulnerability in Apache Cloudstack 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Apache Cloudstack
Published: 2026-08-21
Last modified: 2026-08-27

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's Webhook module while listing and deleting deliveries. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

Frequently asked questions

What is CVE-2026-65613?: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's Webhook module while listing and deleting deliveries. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
How severe is CVE-2026-65613?: CVE-2026-65613 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 low, integrity none, and availability none.
Is CVE-2026-65613 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-65613?: CVE-2026-65613 affects Apache Cloudstack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-65613?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-65613 published?: CVE-2026-65613 was published on 2026-08-21 and last updated on 2026-08-27.

References

https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc

Affected products (1)

cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:*

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