CVE-2023-54391

Proxmox Virtual Environment VE 7.0 through 8.0 contains an authentication bypass vulnerability in libpve-access-control before 8.0.4 that allows unauthenticated attackers to authenticate as any existing enabled user without a configured second factor by supplying an arbitrary tfa-challenge value ...

CVE-2023-54391: Missing Critical Step in Authentication

Proxmox Virtual Environment VE 7.0 through 8.0 contains an authentication bypass vulnerability in libpve-access-control before 8.0.4 that allows unauthenticated attackers to authenticate as any existing enabled user without a configured second factor by supplying an arbitrary tfa-challenge value ...

EUVD-2026-45181

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

CVE-2026-51081

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

CVE-2026-51083

Incorrect access control in Proxmox Virtual Environment PVE 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users within limited privileges to obtain hashed passwords via the cloudinit/dump API...

CVE-2026-51083

Incorrect access control in Proxmox Virtual Environment PVE 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users within limited privileges to obtain hashed passwords via the cloudinit/dump API...

CVE-2026-51082

A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment PVE 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-container before 6.1.3 PVE 9.x and before 5.3.4 PVE 8.x allows an attacker with...

CVE-2026-51081

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

CVE-2026-51083

The Proxmox Virtual Environment (PVE) qemu-server component is affected by an incorrect access control vulnerability in versions 9.x before 9.1.8 and 8.x before 8.4.8 . This flaw allows users with limited privileges to obtain hashed passwords by interacting with the cloudinit/dump API endpoint. T...

PT-2026-60773

A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment PVE 9.x pve-manager 9.1.x before 9.1.9 and 8.4.x before 8.4.19; qemu-server 9.1.x before 9.1.7 and 8.4.x before 8.4.7; and pve-container 6.1.x before 6.1.3 and 5.3.x before 5.3.4 allows an attacker wit...

CVE-2026-51083

Incorrect access control in Proxmox Virtual Environment PVE 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users within limited privileges to obtain hashed passwords via the cloudinit/dump API...

CVE-2026-51082: Concurrent Execution using Shared Resource with Improper Synchronization

A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment PVE 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-container before 6.1.3 PVE 9.x and before 5.3.4 PVE 8.x allows an attacker with...

CVE-2026-51081

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

CVE-2026-51083

Incorrect access control in Proxmox Virtual Environment PVE 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users within limited privileges to obtain hashed passwords via the cloudinit/dump API...

PT-2026-60772

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

PT-2026-60774

Name of the Vulnerable Software and Affected Versions Proxmox Virtual Environment qemu-server versions 9.x prior to 9.1.8 Proxmox Virtual Environment qemu-server versions 8.x prior to 8.4.8 Description Incorrect access control allows users with limited privileges to obtain hashed passwords throug...

CVE-2026-51081: Improper Neutralization of Input During Web Page Generation

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

CVE-2026-51083: Improper Access Control

Incorrect access control in Proxmox Virtual Environment PVE 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users within limited privileges to obtain hashed passwords via the cloudinit/dump API...

CVE-2026-51081

A cross-site scripting XSS vulnerability in Proxmox Virtual Environment PVE 9.x 5.1.8 and Proxmox Virtual Environment PVE 8.x 4.3.16 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload...

CVE-2026-25499: Initialization of a Resource with an Insecure Default

Terraform / OpenTofu Provider adds support for Proxmox Virtual Environment. Prior to version 0.93.1, in the SSH configuration documentation, the sudoer line suggested is insecure and can result in escaping the folder using ../, allowing any files on the system to be edited. This issue has been...