CVE-2026-100716

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-26. A secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Froxlor is a server administration panel. In versions 2.3.10 and earlier, the customer data-export (DataDump) cron fails to validate intermediate path components of the export destination: Froxlor\FileDir::makeCorrectDir() contains an off-by-one in its path-component walk that skips the first segment below the customer home directory, and the guard in ExportCron.php checks only the final component with is_link(). An authenticated customer whose account has the export feature enabled can schedule an export into a genuine subdirectory of their own webspace, then replace an intermediate path component with a symlink before the root-owned cron runs. The cron's chown -R then recursively changes ownership of the linked directory tree — for example /etc — to the customer's UID, yielding host root and cross-tenant compromise. Exploitation is deterministic and requires no race. This is an incomplete fix of GHSA-75h4-... The issue is fixed in Froxlor 2.3.12.

CVSS v3
9.9
EG Score
9.9CRITICALhigh confidence
EG Risk
61
EG Risk 61/100CISA 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
Severity99% × 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
0.4%
EPSS %ILE
31st
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

September 26, 2026

Last Modified

September 28, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

DataDump export cron follows intermediate symlinks — customer gains ownership of arbitrary directories via root `chown -R` (incomplete fix of GHSA-75h4) · Advisory · froxlor/froxlor · GitHub

https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42
generic

Froxlor before 2.3.12 Privilege Escalation via Symlink | Advisories | VulnCheck

https://www.vulncheck.com/advisories/froxlor-before-2.3.12-privilege-escalation-via-symlink

Vendor Advisories for CVE-2026-100716(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 53× in last 7d / 62× 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. 2026-10-04 08:51 UTCGHSA enrichment
  2. 2026-10-04 04:29 UTCGHSA enrichment
  3. 2026-10-04 00:08 UTCGHSA enrichment
  4. 2026-10-03 19:46 UTCGHSA enrichment
  5. 2026-10-03 15:26 UTCEG score recompute
  6. 2026-10-03 15:25 UTCGHSA enrichment
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-03 11:00 UTCGHSA enrichment
  9. 2026-10-03 06:39 UTCGHSA enrichment
  10. 2026-10-03 02:18 UTCGHSA enrichment
  11. 2026-10-02 21:55 UTCGHSA enrichment
  12. 2026-10-02 17:35 UTCEG score recompute
  13. 2026-10-02 17:35 UTCGHSA enrichment
  14. 2026-10-02 13:14 UTCGHSA enrichment
  15. 2026-10-02 08:52 UTCGHSA enrichment
  16. 2026-10-02 04:27 UTCGHSA enrichment
  17. 2026-10-02 00:02 UTCEG score recompute
  18. 2026-10-02 00:02 UTCGHSA enrichment
  19. 2026-10-01 19:49 UTCEPSS rescore
  20. 2026-10-01 19:24 UTCGHSA enrichment
  21. 2026-10-01 15:04 UTCGHSA enrichment
  22. 2026-10-01 10:43 UTCGHSA enrichment
  23. 2026-10-01 06:22 UTCGHSA enrichment
  24. 2026-10-01 02:01 UTCGHSA enrichment
  25. 2026-09-30 21:34 UTCGHSA enrichment
Show 37 more
  1. 2026-09-30 17:10 UTCEG score recompute
  2. 2026-09-30 17:10 UTCGHSA enrichment
  3. 2026-09-30 15:02 UTCEPSS rescore
  4. 2026-09-30 12:50 UTCGHSA enrichment
  5. 2026-09-30 08:29 UTCGHSA enrichment
  6. 2026-09-30 04:08 UTCGHSA enrichment
  7. 2026-09-29 23:47 UTCGHSA enrichment
  8. 2026-09-29 18:12 UTCEG score recompute
  9. 2026-09-29 18:12 UTCGHSA enrichment
  10. 2026-09-29 15:20 UTCEPSS rescore
  11. 2026-09-29 13:13 UTCGHSA enrichment
  12. 2026-09-29 08:52 UTCGHSA enrichment
  13. 2026-09-29 04:32 UTCGHSA enrichment
  14. 2026-09-29 00:10 UTCEG score recompute
  15. 2026-09-29 00:10 UTCGHSA enrichment
  16. 2026-09-28 19:49 UTCEG score recompute
  17. 2026-09-28 19:49 UTCGHSA enrichment
  18. 2026-09-28 15:27 UTCEG score recompute
  19. 2026-09-28 15:26 UTCGHSA enrichment
  20. 2026-09-28 14:57 UTCEG score recompute
  21. 2026-09-28 14:57 UTCGHSA enrichment
  22. 2026-09-28 14:19 UTCGHSA enrichment
  23. 2026-09-28 09:58 UTCGHSA enrichment
  24. 2026-09-28 05:38 UTCGHSA enrichment
  25. 2026-09-28 01:17 UTCGHSA enrichment
  26. 2026-09-27 20:56 UTCGHSA enrichment
  27. 2026-09-27 16:36 UTCEG score recompute
  28. 2026-09-27 16:36 UTCGHSA enrichment
  29. 2026-09-27 12:15 UTCGHSA enrichment
  30. 2026-09-27 07:54 UTCGHSA enrichment
  31. 2026-09-27 03:33 UTCGHSA enrichment
  32. 2026-09-26 23:08 UTCGHSA enrichment
  33. 2026-09-26 18:46 UTCEG score recompute
  34. 2026-09-26 18:46 UTCGHSA enrichment
  35. 2026-09-26 14:25 UTCEG score recompute
  36. 2026-09-26 13:33 UTCEG score recompute
  37. 2026-09-26 13:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100716?
CVE-2026-100716 is a critical vulnerability published on September 26, 2026. Froxlor is a server administration panel. In versions 2.3.10 and earlier, the customer data-export (DataDump) cron fails to validate intermediate path components of the export destination: Froxlor\FileDir::makeCorrectDir() contains an off-by-one in its path-component walk that skips the first…
When was CVE-2026-100716 disclosed?
CVE-2026-100716 was first published on September 26, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100716 actively exploited?
CVE-2026-100716 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100716?
CVE-2026-100716 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100716?
A fix for CVE-2026-100716 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100716 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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