How severe is CVE-2025-27500?

CVE-2025-27500 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 high, integrity low, and availability none.

Is CVE-2025-27500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-27500?

CVE-2025-27500 affects Openziti. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-27500?

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-2025-27500 have an EU (EUVD) identifier?

Yes. CVE-2025-27500 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6003.

When was CVE-2025-27500 published?

CVE-2025-27500 was published on 2025-03-03 and last updated on 2026-06-17.

CVE-2025-27500

CVE-2025-27500 is a high-severity vulnerability in Openziti 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-6003
Weakness: CWE-79
Affected product: Openziti
Published: 2025-03-03
Last modified: 2026-06-17

Description

OpenZiti is a free and open source project focused on bringing zero trust to any application. An endpoint(/api/upload) on the admin panel can be accessed without any form of authentication. This endpoint accepts an HTTP POST to upload a file which is then stored on the node and is available via URL. This can lead to a stored cross site scripting attack if the file uploaded contains malicious code and is then accessed and executed within the context of the user's browser. This function is no longer necessary as the ziti-console moves from a node server application to a single page application, and has been disabled. The vulnerability is fixed in 3.7.1.

Frequently asked questions

What is CVE-2025-27500?: OpenZiti is a free and open source project focused on bringing zero trust to any application. An endpoint(/api/upload) on the admin panel can be accessed without any form of authentication. This endpoint accepts an HTTP POST to upload a file which is then stored on the node and is available via URL. This can lead to a stored cross site scripting attack if the file uploaded contains malicious code and is then accessed and executed within the context of the user's browser. This function is no longer necessary as the ziti-console moves from a node server application to a single page application, and has been disabled. The vulnerability is fixed in 3.7.1.
How severe is CVE-2025-27500?: CVE-2025-27500 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 high, integrity low, and availability none.
Is CVE-2025-27500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-27500?: CVE-2025-27500 affects Openziti. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-27500?: 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-2025-27500 have an EU (EUVD) identifier?: Yes. CVE-2025-27500 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6003.
When was CVE-2025-27500 published?: CVE-2025-27500 was published on 2025-03-03 and last updated on 2026-06-17.

References

https://github.com/openziti/ziti-console/security/advisories/GHSA-frxm-vm48-5qf2

Affected products (1)

cpe:2.3:a:openziti:openziti:*:*:*:*:*:*:*:*

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