CVE-2018-9109

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 3.0%, top 14% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.1Exploit: NoneExposed: 0

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

Studio 42 elFinder before 2.1.36 has a directory traversal vulnerability in elFinder.class.php with the zipdl() function that can allow a remote attacker to download files accessible by the web server process and delete files owned by the account running the web server process.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity91% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
85.8%
KEV
Not listed

Published

March 28, 2018

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 20, 2026
Patch available. Sources: github_commit, github_release.
generic

Advisory about vulnerability of CVE 2018 9109 and CVE 2018 9110 · Studio-42/elFinder Wiki · GitHub

https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110
github_release Patch Available

Version 2.1.36

Patch available: Studio-42/elFinder 2.1.36

https://github.com/Studio-42/elFinder/releases/tag/2.1.36
github_commit

commit 157f471d7e48 (Studio-42/elFinder)

Fix landed in Studio-42/elFinder commit 157f471d7e48 — awaiting tagged release

https://github.com/Studio-42/elFinder/commit/157f471d7e48f190f74e66eb5bc73360b5352fd3

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
studio-42/elfinder2.0.3 ... 2.1.9 (43 versions)2.1.36—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 45× 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. 2026-07-23 01:37 UTCEG score recompute
  2. 2026-07-22 22:18 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
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  1. 2026-07-06 02:20 UTCEPSS rescore
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  18. 2026-06-24 03:29 UTCOSV refresh
  19. 2026-06-23 21:30 UTCEPSS rescore
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  44. 2026-06-07 08:50 UTCOSV refresh
  45. 2026-06-06 13:45 UTCEPSS rescore
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  67. 2026-05-23 02:18 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-9109?
CVE-2018-9109 is a critical vulnerability published on March 28, 2018. Studio 42 elFinder before 2.1.36 has a directory traversal vulnerability in elFinder.class.php with the zipdl() function that can allow a remote attacker to download files accessible by the web server process and delete files owned by the account running the web server process.
When was CVE-2018-9109 disclosed?
CVE-2018-9109 was first published in the National Vulnerability Database on March 28, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-9109 actively exploited?
CVE-2018-9109 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-9109?
CVE-2018-9109 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2018-9109?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-9109, 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.

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