CVE-2026-72835

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. A secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100CISA 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
Severity68% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
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
0.5%
EPSS %ILE
40th
KEV
Not listed

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

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

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 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 14, 2026

Last Modified

September 8, 2026

Advisory Details (2)

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

filebrowser before v2.63.21 Access Rule Bypass via Path Canonicalization | Advisories | VulnCheck

https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization
github Patch Available🟡 PoC Available

Access rule bypass via case-variant and Windows-separator paths · Advisory · filebrowser/filebrowser · GitHub

Affected: v2.63.21 by

https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7

Vendor Advisories for CVE-2026-72835(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 / 71× 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 139 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72835?
CVE-2026-72835 is a medium vulnerability published on August 14, 2026. filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule…
When was CVE-2026-72835 disclosed?
CVE-2026-72835 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-2026-72835 actively exploited?
CVE-2026-72835 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72835?
CVE-2026-72835 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72835?
A fix for CVE-2026-72835 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72835 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-72835

Explore →

Is Your Infrastructure Affected by CVE-2026-72835?

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

Book a Demo →Browse All CVEs