CVE-2026-51080

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM 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: 1%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(medium)
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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

July 17, 2026

Last Modified

August 11, 2026

Advisory Details (1)

Auto-updated Sep 9, 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 14× in last 7d / 136× 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.

Showing the most recent 100 of 289 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 00:22 UTCEG score recompute
  5. 2026-09-08 00:22 UTCGHSA enrichment
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 17:38 UTCEG score recompute
  8. 2026-09-06 17:38 UTCGHSA enrichment
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-06 13:24 UTCGHSA enrichment
  11. 2026-09-06 04:54 UTCGHSA enrichment
  12. 2026-09-06 00:44 UTCGHSA enrichment
  13. 2026-09-05 20:29 UTCEG score recompute
  14. 2026-09-05 20:29 UTCGHSA enrichment
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-08-31 04:29 UTCGHSA enrichment
  20. 2026-08-31 00:17 UTCGHSA enrichment
  21. 2026-08-30 20:07 UTCEG score recompute
  22. 2026-08-30 20:07 UTCGHSA enrichment
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 15:56 UTCGHSA enrichment
  25. 2026-08-30 11:46 UTCGHSA enrichment
Show 75 more
  1. 2026-08-30 07:36 UTCGHSA enrichment
  2. 2026-08-30 03:26 UTCEG score recompute
  3. 2026-08-30 03:26 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-28 01:49 UTCGHSA enrichment
  7. 2026-08-27 21:26 UTCEG score recompute
  8. 2026-08-27 21:26 UTCGHSA enrichment
  9. 2026-08-27 14:25 UTCEPSS rescore
  10. 2026-08-27 12:23 UTCGHSA enrichment
  11. 2026-08-27 02:53 UTCGHSA enrichment
  12. 2026-08-26 22:43 UTCEG score recompute
  13. 2026-08-26 22:43 UTCGHSA enrichment
  14. 2026-08-26 14:46 UTCEPSS rescore
  15. 2026-08-26 11:57 UTCGHSA enrichment
  16. 2026-08-26 05:48 UTCGHSA enrichment
  17. 2026-08-26 00:55 UTCGHSA enrichment
  18. 2026-08-25 20:23 UTCGHSA enrichment
  19. 2026-08-25 16:12 UTCEG score recompute
  20. 2026-08-25 16:12 UTCGHSA enrichment
  21. 2026-08-25 13:49 UTCEPSS rescore
  22. 2026-08-25 12:00 UTCGHSA enrichment
  23. 2026-08-25 07:49 UTCGHSA enrichment
  24. 2026-08-25 03:37 UTCGHSA enrichment
  25. 2026-08-24 23:27 UTCGHSA enrichment
  26. 2026-08-24 19:17 UTCEG score recompute
  27. 2026-08-24 19:17 UTCGHSA enrichment
  28. 2026-08-24 13:20 UTCEG score recompute
  29. 2026-08-24 13:20 UTCGHSA enrichment
  30. 2026-08-24 09:09 UTCGHSA enrichment
  31. 2026-08-24 04:48 UTCGHSA enrichment
  32. 2026-08-24 00:38 UTCGHSA enrichment
  33. 2026-08-23 20:28 UTCGHSA enrichment
  34. 2026-08-23 16:18 UTCGHSA enrichment
  35. 2026-08-23 11:57 UTCGHSA enrichment
  36. 2026-08-23 07:46 UTCGHSA enrichment
  37. 2026-08-23 03:36 UTCEG score recompute
  38. 2026-08-23 03:36 UTCGHSA enrichment
  39. 2026-08-23 00:19 UTCEPSS rescore
  40. 2026-08-22 23:25 UTCGHSA enrichment
  41. 2026-08-22 19:14 UTCGHSA enrichment
  42. 2026-08-22 15:03 UTCGHSA enrichment
  43. 2026-08-22 10:53 UTCGHSA enrichment
  44. 2026-08-22 06:43 UTCGHSA enrichment
  45. 2026-08-22 02:32 UTCEG score recompute
  46. 2026-08-22 02:32 UTCGHSA enrichment
  47. 2026-08-21 23:49 UTCEPSS rescore
  48. 2026-08-21 22:22 UTCGHSA enrichment
  49. 2026-08-21 18:12 UTCGHSA enrichment
  50. 2026-08-21 14:02 UTCGHSA enrichment
  51. 2026-08-21 09:11 UTCGHSA enrichment
  52. 2026-08-21 05:01 UTCGHSA enrichment
  53. 2026-08-21 00:51 UTCEG score recompute
  54. 2026-08-21 00:50 UTCGHSA enrichment
  55. 2026-08-20 22:55 UTCEPSS rescore
  56. 2026-08-20 20:40 UTCGHSA enrichment
  57. 2026-08-20 16:28 UTCGHSA enrichment
  58. 2026-08-20 12:18 UTCGHSA enrichment
  59. 2026-08-20 08:08 UTCGHSA enrichment
  60. 2026-08-20 03:58 UTCGHSA enrichment
  61. 2026-08-19 23:48 UTCEG score recompute
  62. 2026-08-19 23:48 UTCGHSA enrichment
  63. 2026-08-19 17:04 UTCEPSS rescore
  64. 2026-08-19 13:26 UTCGHSA enrichment
  65. 2026-08-19 09:13 UTCGHSA enrichment
  66. 2026-08-19 04:37 UTCGHSA enrichment
  67. 2026-08-19 00:11 UTCGHSA enrichment
  68. 2026-08-18 19:55 UTCEG score recompute
  69. 2026-08-18 19:55 UTCGHSA enrichment
  70. 2026-08-18 13:48 UTCEPSS rescore
  71. 2026-08-18 10:48 UTCGHSA enrichment
  72. 2026-08-18 06:37 UTCGHSA enrichment
  73. 2026-08-18 02:27 UTCGHSA enrichment
  74. 2026-08-17 21:18 UTCGHSA enrichment
  75. 2026-08-17 14:12 UTCEG score recompute

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, with the most recent update on August 11, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 57.6% 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.

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