How severe is CVE-2025-34100?

CVE-2025-34100 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2025-34100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-34100?

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.

Does CVE-2025-34100 have an EU (EUVD) identifier?

Yes. CVE-2025-34100 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21028.

When was CVE-2025-34100 published?

CVE-2025-34100 was published on 2025-07-10 and last updated on 2026-06-17.

CVE-2025-34100

CVE-2025-34100 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. 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-20.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-21028
Weakness: CWE-20
Published: 2025-07-10
Last modified: 2026-06-17

Description

An unrestricted file upload vulnerability exists in BuilderEngine 3.5.0 via the integration of the elFinder 2.0 file manager and its use of the jQuery File Upload plugin. The plugin fails to properly validate or restrict file types or locations during upload operations, allowing an attacker to upload a malicious .php file and subsequently execute arbitrary PHP code on the server under the context of the web server process. While the root vulnerability lies within the jQuery File Upload component, BuilderEngine’s improper integration and lack of access controls expose this functionality to unauthenticated users, resulting in full remote code execution.

Frequently asked questions

What is CVE-2025-34100?: An unrestricted file upload vulnerability exists in BuilderEngine 3.5.0 via the integration of the elFinder 2.0 file manager and its use of the jQuery File Upload plugin. The plugin fails to properly validate or restrict file types or locations during upload operations, allowing an attacker to upload a malicious .php file and subsequently execute arbitrary PHP code on the server under the context of the web server process. While the root vulnerability lies within the jQuery File Upload component, BuilderEngine’s improper integration and lack of access controls expose this functionality to unauthenticated users, resulting in full remote code execution.
How severe is CVE-2025-34100?: CVE-2025-34100 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2025-34100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-34100?: 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.
Does CVE-2025-34100 have an EU (EUVD) identifier?: Yes. CVE-2025-34100 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21028.
When was CVE-2025-34100 published?: CVE-2025-34100 was published on 2025-07-10 and last updated on 2026-06-17.

References

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