CVE-2026-72837

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths. Attackers with valid upstream-authenticated credentials can read, modify, delete, and share files belonging to other users by exploiting the server root scope assignment.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
44th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 14, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

File Browser before 2.63.20 Privilege Escalation via Proxy Authentication | Advisories | VulnCheck

https://www.vulncheck.com/advisories/file-browser-before-privilege-escalation-via-proxy-authentication
github Patch Available🟡 PoC Available

Proxy and hook auto-provisioning ignore createUserDir and grant the server root scope · Advisory · filebrowser/filebrowser · GitHub

https://github.com/filebrowser/filebrowser/security/advisories/GHSA-j7jh-37pf-mf8h

Vendor Advisories for CVE-2026-72837(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 16× in last 7d / 91× 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 182 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-72837?
CVE-2026-72837 is a high vulnerability published on August 14, 2026. File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths. Attackers with valid upstream-authenticated credentials can read, modify, delete, and share files belonging to other users by exploiting the server root scope…
When was CVE-2026-72837 disclosed?
CVE-2026-72837 was first published on August 14, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72837 actively exploited?
CVE-2026-72837 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72837?
CVE-2026-72837 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72837?
A fix for CVE-2026-72837 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72837 are linked in the Vendor Advisories panel on this page.

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