CVE-2026-18972

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-11. a secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 9.6Exploit: None knownExposed: 0

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

An authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \"Grpc-Metadata-USER\". This can lead to an account takeover attack from a user with low privileges to administrator.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity96% × 45%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
93%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

CVE-2026-18972 Velociraptor authenticated identity-spoofing …

http://docs.velociraptor.app/announcements/advisories/cve-2026-18972/

Vendor Advisories for CVE-2026-18972(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 42× in last 7d / 196× 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 268 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-18972?
CVE-2026-18972 is a critical vulnerability published on August 11, 2026. An authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \"Grpc-Metadata-USER\". This can lead to an account takeover attack from a user with low privileges to administrator.
When was CVE-2026-18972 disclosed?
CVE-2026-18972 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18972 actively exploited?
CVE-2026-18972 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 6.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18972?
CVE-2026-18972 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-18972?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18972, 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

Explore the affected products and dependency analysis for CVE-2026-18972

Explore →

Is Your Infrastructure Affected by CVE-2026-18972?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs