How severe is CVE-2026-42605?

CVE-2026-42605 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-2026-42605 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42605?

CVE-2026-42605 affects Azuracast. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42605?

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.

Does CVE-2026-42605 have an EU (EUVD) identifier?

Yes. CVE-2026-42605 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28936.

When was CVE-2026-42605 published?

CVE-2026-42605 was published on 2026-05-09 and last updated on 2026-06-17.

CVE-2026-42605

CVE-2026-42605 is a high-severity vulnerability in Azuracast 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28936
Weakness: CWE-22
Affected product: Azuracast
Published: 2026-05-09
Last modified: 2026-06-17

Description

AzuraCast is a self-hosted, all-in-one web radio management suite. Prior to version 0.23.6, the currentDirectory request parameter in the Flow.js media upload endpoint (POST /api/station/{station_id}/files/upload) is not sanitized for path traversal sequences. When combined with a local filesystem storage backend (the default), an authenticated user with media management permissions can write arbitrary files outside the station's media storage directory, achieving remote code execution by writing a PHP webshell to the web root. This issue has been patched in version 0.23.6.

Frequently asked questions

What is CVE-2026-42605?: AzuraCast is a self-hosted, all-in-one web radio management suite. Prior to version 0.23.6, the currentDirectory request parameter in the Flow.js media upload endpoint (POST /api/station/{station_id}/files/upload) is not sanitized for path traversal sequences. When combined with a local filesystem storage backend (the default), an authenticated user with media management permissions can write arbitrary files outside the station's media storage directory, achieving remote code execution by writing a PHP webshell to the web root. This issue has been patched in version 0.23.6.
How severe is CVE-2026-42605?: CVE-2026-42605 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-2026-42605 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42605?: CVE-2026-42605 affects Azuracast. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42605?: 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.
Does CVE-2026-42605 have an EU (EUVD) identifier?: Yes. CVE-2026-42605 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28936.
When was CVE-2026-42605 published?: CVE-2026-42605 was published on 2026-05-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:azuracast:azuracast:*:*:*:*:*:*:*:*

More vulnerabilities in Azuracast

CVE-2023-2531 — Critical (CVSS 9.8): Improper Restriction of Excessive Authentication Attempts in GitHub repository azuracast/azuracast prior to 0.18.3.
CVE-2026-42606 — High (CVSS 8.1): AzuraCast is a self-hosted, all-in-one web radio management suite. Prior to version 0.23.6, the ApplyXForwarded…
CVE-2023-2191 — Medium (CVSS 4.8): Cross-site Scripting (XSS) - Stored in GitHub repository azuracast/azuracast prior to 0.18.
CVE-2025-67737 — Low (CVSS 3.1): AzuraCast is a self-hosted, all-in-one web radio management suite. Versions 0.23.1 mistakenly include an API endpoint…

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