CVE-2026-51080

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-17. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 17, 2026

Advisory Details (1)

Auto-updated Jul 25, 2026
No patch confirmed yet.
generic

Proxmox Virtual Environment - Security Advisories | Page 2 | Proxmox Support Forum

https://forum.proxmox.com/threads/proxmox-virtual-environment-security-advisories.149331/post-849970

Vendor Advisories for CVE-2026-51080(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 25× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-28 17:53 UTCEG score recompute
  2. 2026-07-28 17:53 UTCGHSA enrichment
  3. 2026-07-28 15:37 UTCEPSS rescore
  4. 2026-07-28 13:41 UTCGHSA enrichment
  5. 2026-07-28 09:27 UTCGHSA enrichment
  6. 2026-07-28 05:16 UTCGHSA enrichment
  7. 2026-07-28 01:05 UTCGHSA enrichment
  8. 2026-07-27 20:55 UTCGHSA enrichment
  9. 2026-07-27 16:44 UTCEG score recompute
  10. 2026-07-27 16:44 UTCGHSA enrichment
  11. 2026-07-27 12:32 UTCGHSA enrichment
  12. 2026-07-27 08:21 UTCGHSA enrichment
  13. 2026-07-27 04:11 UTCGHSA enrichment
  14. 2026-07-26 23:58 UTCGHSA enrichment
  15. 2026-07-26 19:48 UTCGHSA enrichment
  16. 2026-07-26 15:37 UTCEG score recompute
  17. 2026-07-26 15:36 UTCGHSA enrichment
  18. 2026-07-26 14:54 UTCEPSS rescore
  19. 2026-07-26 11:23 UTCEG score recompute
  20. 2026-07-26 11:23 UTCGHSA enrichment
  21. 2026-07-25 14:18 UTCEPSS rescore
  22. 2026-07-24 14:18 UTCEPSS rescore
  23. 2026-07-23 14:18 UTCEPSS rescore
  24. 2026-07-23 03:19 UTCEG score recompute
  25. 2026-07-22 14:08 UTCEPSS rescore
Show 13 more
  1. 2026-07-21 15:25 UTCEPSS rescore
  2. 2026-07-20 17:08 UTCEPSS rescore
  3. 2026-07-19 14:31 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 02:30 UTCEG score recompute
  6. 2026-07-19 02:30 UTCGHSA enrichment
  7. 2026-07-19 02:29 UTCEPSS rescore
  8. 2026-07-17 17:16 UTCEG score recompute▲ 9.80
  9. 2026-07-17 17:16 UTCGHSA enrichment
  10. 2026-07-17 17:14 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  11. 2026-07-17 16:00 UTCNVD update
  12. 2026-07-17 14:10 UTCEG score recompute
  13. 2026-07-17 14:09 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51080?
CVE-2026-51080 is a critical vulnerability published on July 17, 2026. libpvestorage-perl v9.1.1 and libpve-storage-perl v8.3.7 were discovered to contain an XML External Entity (XXE) vulnerability.
When was CVE-2026-51080 disclosed?
CVE-2026-51080 was first published in the National Vulnerability Database on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51080 actively exploited?
CVE-2026-51080 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 77.7% of all scored CVEs.
What is the CVSS score of CVE-2026-51080?
CVE-2026-51080 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51080?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51080, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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