Is CVE-2026-94588 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-94588 being exploited in the wild.

How severe is CVE-2026-94588?

Medium severity, with a CVSS score of 4.4, published 21 September 2026.

Is there a fix for CVE-2026-94588?

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-2026-94588 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-94588?

Check whether you run Proxmox Mail Gateway pmg-api 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-2026-94588: Proxmox Mail Gateway argument injection in package changelog retrieval

CVE-2026-94588 · Severity: medium · CVSS 4.4 · Published 2026-09-21

Proxmox Mail Gateway's API contains a vulnerability in its package changelog retrieval functionality that allows argument injection attacks. An authenticated attacker can exploit this to inject malicious arguments into system commands, potentially leading to unauthorized command execution or information disclosure. While authentication is required, the vulnerability can be leveraged in CSRF-style attacks against administrative users.

Vendors: Proxmox.

Quick answers

Is CVE-2026-94588 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-94588 being exploited in the wild.
How severe is CVE-2026-94588?: Medium severity, with a CVSS score of 4.4, published 21 September 2026.
Which products and versions are affected?: Proxmox Mail Gateway pmg-api <UNKNOWN>.
Is there a fix for CVE-2026-94588?: 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-2026-94588 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-94588?: Check whether you run Proxmox Mail Gateway pmg-api 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

The vulnerability exists in pmg-api's package changelog endpoint where user-supplied input is insufficiently sanitized before being passed to underlying apt-get commands. An authenticated attacker can inject shell arguments to alter command behavior. The attack vector requires prior authentication but does not require explicit user interaction beyond normal API access.

Affected products

Proxmox Mail Gateway pmg-api <UNKNOWN>

Timeline

2026-09-21: disclosed

References

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