PSA-2026-00077: Proxmox Virtual Environment: Missing validation of network configuration fields
This Proxmox advisory covers a security issue in Proxmox Virtual Environment.
Key facts
- Fixed in
- pve-manager 9.2.23
- Advisory id
- PSA-2026-00077
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Some fields/options in the network configuration /etc/network/interfaces which are exposed over the network configuration API were lacking validation, allowing the injection of arbitrary lines in the generated configuration file.
Since some network configuration options allow executing arbitrary commands as root during boot or network settings reload tasks, this effectively is a root privilege escalation which can be triggered by users/tokens with Sys.Modify privileges on /nodes/{node}. This issue was found internally.
Packages: libpve-common-perl, pve-manager.
Affected product named by the advisory: Proxmox Virtual Environment.
Text from the source record.
Fix and mitigation
Upgrade to a fixed release named by Proxmox:
- pve-manager 9.2.23
Vendor guidance
- Update to the fixed package versions: pve-manager >= 9.2.23.
End-of-life dates for Proxmox VE
More Proxmox advisories
PSA-2026-00095Nov 10, 2026Proxmox Virtual Environment: Broken privilege checks when modifying container NICsPSA-2026-00094Nov 10, 2026Proxmox Virtual Environment: OCI extraction path escapePSA-2026-00093Nov 10, 2026Proxmox Virtual Environment: FRR config injection issuesPSA-2026-00092Nov 10, 2026Proxmox Virtual Environment: Missing and incomplete ACL checks in the SDN APIPSA-2026-00089Nov 10, 2026Proxmox: Several issues in libpve-http-server-perlPSA-2026-00088Nov 10, 2026Proxmox Virtual Environment: Shell command injection via volume name
Get an email when Proxmox Virtual Environment (VE) publishes the next one.
See Proxmox Virtual Environment (VE)'s last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).
iPhone and Android apps · New on the App Store
Monitor Proxmox Proxmox Virtual Environment from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
