How severe is CVE-2023-28609?

CVE-2023-28609 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28609?

CVE-2023-28609 affects Ansible-semaphore Ansible Semaphore. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28609?

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

When was CVE-2023-28609 published?

CVE-2023-28609 was published on 2023-03-18 and last updated on 2026-06-17.

CVE-2023-28609

CVE-2023-28609 is a critical-severity vulnerability in Ansible-semaphore Ansible Semaphore with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Ansible-semaphore Ansible Semaphore
Published: 2023-03-18
Last modified: 2026-06-17

Description

api/auth.go in Ansible Semaphore before 2.8.89 mishandles authentication.

Frequently asked questions

What is CVE-2023-28609?: api/auth.go in Ansible Semaphore before 2.8.89 mishandles authentication.
How severe is CVE-2023-28609?: CVE-2023-28609 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28609?: CVE-2023-28609 affects Ansible-semaphore Ansible Semaphore. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-28609 published?: CVE-2023-28609 was published on 2023-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ansible-semaphore:ansible_semaphore:*:*:*:*:*:ansible:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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