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%CVSS: 6.8Exploit: None knownExposed: 0

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

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
6.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

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 20× in last 7d / 83× 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 105 total refreshes for this CVE.

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

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 64.6% of all scored CVEs.
What is the CVSS score of CVE-2026-72835?
CVE-2026-72835 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-72835?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72835, 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

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