CVE-2026-72835

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH 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 — 4 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(high)
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
27%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 14, 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 24× in last 7d / 24× 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. 2026-08-20 08:34 UTCEG score recompute
  2. 2026-08-20 08:34 UTCGHSA enrichment
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-19 10:14 UTCEG score recompute
  5. 2026-08-19 10:14 UTCGHSA enrichment
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-18 11:54 UTCEG score recompute
  9. 2026-08-18 11:54 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 13:34 UTCGHSA enrichment
  12. 2026-08-16 15:14 UTCEG score recompute
  13. 2026-08-16 15:14 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 02:15 UTCEPSS rescore
  17. 2026-08-15 16:55 UTCGHSA enrichment
  18. 2026-08-14 18:35 UTCEG score recompute
  19. 2026-08-14 18:35 UTCGHSA enrichment
  20. 2026-08-14 17:06 UTCEG score recompute
  21. 2026-08-14 17:06 UTCGHSA enrichment
  22. 2026-08-14 12:22 UTCEG score recompute
  23. 2026-08-14 11:49 UTCEG score recompute
  24. 2026-08-14 11:49 UTCMITRE cvelistV5first tracked

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. 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 73.1% 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

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

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