Is CVE-2026-8758 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8758 being exploited in the wild.

How severe is CVE-2026-8758?

High severity, with a CVSS score of 7.3, published 17 May 2026.

Which products and versions are affected?

Metasoft MetaCRM up to 6.4.0 Beta06.

Is there a fix for CVE-2026-8758?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-8758 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-8758?

Check whether you run Metasoft MetaCRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8758: Metasoft MetaCRM unrestricted file upload in upload3.jsp

CVE-2026-8758 · Severity: high · CVSS 7.3 · Published 2026-05-17

Metasoft MetaCRM, a customer relationship management platform, contains a security flaw that allows unauthorized users to upload files to the server. An attacker could use this to place malicious files on the system, potentially leading to a full compromise of the server and the customer data stored within it. This vulnerability can be exploited remotely without any user interaction or login credentials.

Technologies: Metasoft MetaCRM. Vendors: Metasoft.

Quick answers

Is CVE-2026-8758 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8758 being exploited in the wild.
How severe is CVE-2026-8758?: High severity, with a CVSS score of 7.3, published 17 May 2026.
Which products and versions are affected?: Metasoft MetaCRM up to 6.4.0 Beta06.
Is there a fix for CVE-2026-8758?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-8758 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-8758?: Check whether you run Metasoft MetaCRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An unrestricted file upload vulnerability (CWE-434) exists in Metasoft MetaCRM versions up to 6.4.0 Beta06. The flaw is located in the '/common/jsp/upload3.jsp' file and is triggered by manipulating the 'File' argument. Because the application fails to properly validate the type or content of uploaded files, a remote, unauthenticated attacker can upload arbitrary files to the web server. This typically allows for the execution of malicious scripts (such as a JSP web shell) in the context of the web server process. As of the advisory date, the vendor has not responded to disclosure attempts, and no official patch is available.

Affected products

Metasoft (美特软件) MetaCRM up to 6.4.0 Beta06

Timeline

2026-05-17: advisory: Vulnerability disclosed via VulDB and NVD
2026-05-17: disclosed: Public disclosure of the exploit details

References

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