CVE-2026-18348

MEDIUMPre-NVD 4.14.1—
EchelonGraph scoreMEDIUM confidence

Score 4.1 from GitHub Security Advisory published 2026-08-11. A secondary CVSS source baseline 4.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.1Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

Missing authorization check in the upload_azure, upload_sftp, and upload_smb VQL plugins allows an authenticated analyst-role user can initiate attacker-controlled outbound network connections from the Velociraptor server, bypassing the NETWORK ACL permission boundary. This enables internal network reconnaissance via port oracle and potential data exfiltration to external endpoints.

CVSS v3
4.1
EG Score
4.1MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100CISA 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
Severity41% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.3%
EPSS %ILE
24th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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 (2)

Auto-updated Aug 11, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit 48824fb51a2b (Velocidex/velociraptor)

Fix landed in Velocidex/velociraptor commit 48824fb51a2b — awaiting tagged release

https://github.com/Velocidex/velociraptor/commit/48824fb51a2bdba832abc281e719ecbed74736df
generic

CVE-2026-18348 Velociraptor NETWORK ACL bypass via upload_azure / …

http://docs.velociraptor.app/announcements/advisories/cve-2026-18348/

Vendor Advisories for CVE-2026-18348(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 12× in last 7d / 64× 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 136 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-18348?
CVE-2026-18348 is a medium vulnerability published on August 11, 2026. Missing authorization check in the uploadazure, uploadsftp, and upload_smb VQL plugins allows an authenticated analyst-role user can initiate attacker-controlled outbound network connections from the Velociraptor server, bypassing the NETWORK ACL permission boundary. This enables internal network…
When was CVE-2026-18348 disclosed?
CVE-2026-18348 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-2026-18348 actively exploited?
CVE-2026-18348 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (24th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18348?
CVE-2026-18348 has a CVSS base score of 4.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18348?
An upstream fix for CVE-2026-18348 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-18348 are linked in the Vendor Advisories panel on this page.

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