CVE-2026-51080
XXE in libpve-storage-perl allowing local file disclosure and SSRF
Is CVE-2026-51080 being exploited?
Not confirmed. CVE-2026-51080 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-51080?
CVE-2026-51080 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-51080?
Yes. A fix has been recorded for CVE-2026-51080. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-51080 affect?
CVE-2026-51080 affects libpvestorage-perl v9.1.1, libpve-storage-perl v8.3.7, Proxmox VE instances using these libraries. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-51080?
Apply vendor patch ASAP; block/validate untrusted XML and restrict management access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted XML can force XML External Entity processing to read local files, exfiltrate secrets, trigger SSRF or crash services, enabling further compromise.
Immediate action required