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Advisory record · GHSA-9hjf-w35w-6vx2

elFinder: CSRF in netmount allows forced FTP mounts and server-side FTP connections

CVSS 5.4 MediumEPSS 0.0018 · 7th percentile

Published by the GitHub Advisory Database at 2 Sept 2026, 14:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
studio-42/elfinderPackagist<2.1.702.1.70
Identifiers
GHSA-9hjf-w35w-6vx2 · CVE-2026-81890 · PKSA-th2b-2jzf-hmp6
Weakness (CWE)
CWE-352
Tags
Published
2 Sept 2026
Updated
2 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

elFinder (Packagist studio-42/elfinder) versions before 2.1.70 do not apply CSRF validation to the netmount command. In the shipped minimal connector configuration, where FTP network mounts are enabled by default, a cross-site request can make a victim's elFinder session mount an attacker-chosen FTP endpoint and cause the server to open an outbound FTP connection. Upgrade to version 2.1.70, which is the fixed release.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.4 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0018, the 7th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:06 UTC First seen by agentprime
  2. 31 Oct 2026, 14:06 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.