CVE-2026-51080 — CRITICAL (9.8)

Vulnerability Description

libpvestorage-perl v9.1.1 and libpve-storage-perl v8.3.7 were discovered to contain an XML External Entity (XXE) vulnerability.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Proxmox	Libpve-Storage-Perl	8.3.7

Related Weaknesses (CWE)

CWE-611

References

https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisorieIssue TrackingVendor Advisory

FAQ

What is CVE-2026-51080?

CVE-2026-51080 is a vulnerability with a CVSS score of 9.8 (CRITICAL). libpvestorage-perl v9.1.1 and libpve-storage-perl v8.3.7 were discovered to contain an XML External Entity (XXE) vulnerability.

How severe is CVE-2026-51080?

CVE-2026-51080 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-51080?

Check the references section above for vendor advisories and patch information. Affected products include: Proxmox Libpve-Storage-Perl.