CVE-2026-18972

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH 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: 0%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(high)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 11, 2026

Advisory Details (1)

Auto-updated Aug 15, 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 53× in last 7d / 77× 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. 2026-08-21 05:43 UTCGHSA enrichment
  2. 2026-08-21 01:34 UTCEG score recompute
  3. 2026-08-21 01:34 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 21:26 UTCGHSA enrichment
  6. 2026-08-20 17:17 UTCGHSA enrichment
  7. 2026-08-20 13:08 UTCGHSA enrichment
  8. 2026-08-20 08:55 UTCGHSA enrichment
  9. 2026-08-20 04:46 UTCGHSA enrichment
  10. 2026-08-20 00:37 UTCGHSA enrichment
  11. 2026-08-19 20:28 UTCEG score recompute
  12. 2026-08-19 20:28 UTCGHSA enrichment
  13. 2026-08-19 17:03 UTCEPSS rescore
  14. 2026-08-19 16:19 UTCGHSA enrichment
  15. 2026-08-19 12:02 UTCGHSA enrichment
  16. 2026-08-19 07:53 UTCGHSA enrichment
  17. 2026-08-19 03:44 UTCGHSA enrichment
  18. 2026-08-18 23:35 UTCGHSA enrichment
  19. 2026-08-18 19:26 UTCGHSA enrichment
  20. 2026-08-18 15:17 UTCEG score recompute
  21. 2026-08-18 15:17 UTCGHSA enrichment
  22. 2026-08-18 13:48 UTCEPSS rescore
  23. 2026-08-18 09:38 UTCGHSA enrichment
  24. 2026-08-18 05:29 UTCGHSA enrichment
  25. 2026-08-18 01:17 UTCGHSA enrichment
Show 52 more
  1. 2026-08-17 21:03 UTCGHSA enrichment
  2. 2026-08-17 16:54 UTCEG score recompute
  3. 2026-08-17 16:54 UTCGHSA enrichment
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-17 12:45 UTCGHSA enrichment
  6. 2026-08-17 08:36 UTCGHSA enrichment
  7. 2026-08-17 04:28 UTCGHSA enrichment
  8. 2026-08-17 00:19 UTCGHSA enrichment
  9. 2026-08-16 20:10 UTCGHSA enrichment
  10. 2026-08-16 16:01 UTCEG score recompute
  11. 2026-08-16 16:01 UTCGHSA enrichment
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 11:52 UTCGHSA enrichment
  14. 2026-08-16 07:43 UTCGHSA enrichment
  15. 2026-08-16 03:35 UTCEG score recompute
  16. 2026-08-16 03:35 UTCGHSA enrichment
  17. 2026-08-16 02:14 UTCEPSS rescore
  18. 2026-08-15 23:26 UTCGHSA enrichment
  19. 2026-08-15 19:17 UTCGHSA enrichment
  20. 2026-08-15 15:08 UTCGHSA enrichment
  21. 2026-08-15 10:59 UTCGHSA enrichment
  22. 2026-08-15 06:50 UTCGHSA enrichment
  23. 2026-08-15 02:02 UTCEG score recompute
  24. 2026-08-15 02:02 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
  26. 2026-08-14 21:53 UTCGHSA enrichment
  27. 2026-08-14 17:45 UTCGHSA enrichment
  28. 2026-08-14 13:22 UTCGHSA enrichment
  29. 2026-08-14 09:13 UTCGHSA enrichment
  30. 2026-08-14 05:05 UTCGHSA enrichment
  31. 2026-08-14 00:56 UTCEG score recompute
  32. 2026-08-14 00:56 UTCGHSA enrichment
  33. 2026-08-13 22:00 UTCEPSS rescore
  34. 2026-08-13 20:47 UTCGHSA enrichment
  35. 2026-08-13 16:38 UTCGHSA enrichment
  36. 2026-08-13 12:09 UTCGHSA enrichment
  37. 2026-08-13 08:00 UTCGHSA enrichment
  38. 2026-08-13 03:51 UTCGHSA enrichment
  39. 2026-08-12 23:42 UTCGHSA enrichment
  40. 2026-08-12 19:33 UTCGHSA enrichment
  41. 2026-08-12 15:24 UTCEG score recompute
  42. 2026-08-12 15:24 UTCGHSA enrichment
  43. 2026-08-12 13:50 UTCEPSS rescore
  44. 2026-08-12 11:14 UTCGHSA enrichment
  45. 2026-08-12 07:04 UTCGHSA enrichment
  46. 2026-08-12 02:55 UTCGHSA enrichment
  47. 2026-08-11 22:46 UTCGHSA enrichment
  48. 2026-08-11 18:33 UTCEG score recompute
  49. 2026-08-11 18:33 UTCGHSA enrichment
  50. 2026-08-11 13:25 UTCEG score recompute
  51. 2026-08-11 12:37 UTCEG score recompute
  52. 2026-08-11 12:37 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database 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-2026-18972 actively exploited?
CVE-2026-18972 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 74.5% 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

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