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 mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.6Exploit: None knownExposed services: Not assessed

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

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
9.6CRITICALmedium confidence
EG Risk
48
EG Risk 48/100CISA SSVC

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%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 11, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Sep 30, 2026
No patch confirmed yet.
generic

CVE-2026-18972 Velociraptor authenticated identity-spoofing vulnerability – Velociraptor - Digging deeper!

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 28× in last 7d / 158× 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 337 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 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 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18972?
CVE-2026-18972 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18972?
No fix for CVE-2026-18972 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-18972 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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