CVE-2026-72837

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 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%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

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
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
23%
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

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 35× in last 7d / 35× 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. 2026-08-21 01:03 UTCEG score recompute
  2. 2026-08-21 01:03 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:24 UTCGHSA enrichment
  5. 2026-08-19 23:45 UTCEG score recompute
  6. 2026-08-19 23:45 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 11:05 UTCGHSA enrichment
  9. 2026-08-18 22:25 UTCEG score recompute
  10. 2026-08-18 22:24 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 09:45 UTCGHSA enrichment
  14. 2026-08-17 21:06 UTCEG score recompute
  15. 2026-08-17 21:05 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 08:25 UTCGHSA enrichment
  18. 2026-08-16 19:46 UTCEG score recompute
  19. 2026-08-16 19:46 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 07:06 UTCEG score recompute
  23. 2026-08-16 07:06 UTCGHSA enrichment
  24. 2026-08-16 02:15 UTCEPSS rescore
  25. 2026-08-15 18:27 UTCGHSA enrichment
Show 10 more
  1. 2026-08-15 05:47 UTCGHSA enrichment
  2. 2026-08-14 17:07 UTCEG score recompute
  3. 2026-08-14 17:06 UTCGHSA enrichment
  4. 2026-08-14 15:30 UTCEG score recompute
  5. 2026-08-14 15:30 UTCGHSA enrichment
  6. 2026-08-14 14:59 UTCEG score recompute
  7. 2026-08-14 14:59 UTCGHSA enrichment
  8. 2026-08-14 12:22 UTCEG score recompute
  9. 2026-08-14 11:49 UTCEG score recompute
  10. 2026-08-14 11:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 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-2026-72837 actively exploited?
CVE-2026-72837 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 77.3% of all scored CVEs.
What is the CVSS score of CVE-2026-72837?
CVE-2026-72837 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-72837?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72837, 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-2026-72837

Explore →

Is Your Infrastructure Affected by CVE-2026-72837?

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

Start Free Scan →Browse All CVEs