CVE-2022-27115: In Studio-42 elFinder 2.1.60, there is a vulnerability that causes remote code execution through file name byp

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-27115 is a critical-severity flaw (CVSS 9.8) affecting elfinder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Studio-42 elFinder 2.1.60, there is a vulnerability that causes remote code execution through file name bypass for file upload.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	28.6% (top 2%)
CISA exploited list	No
Weakness	CWE-434
Published	2022-04-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: std42

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-04-11 15:15 UTCPublished CVE record published
2026-06-17 04:36 UTCUpdated Record last modified

std42 elfinder DOWNGRADE

Affected: 2.1.60

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.60

1. Check installed version

apt-cache policy elfinder || rpm -q elfinder || elfinder --version

2. No fixed release: DOWNGRADE to a release before 2.1.60 (Debian / Ubuntu)

apt-cache madison elfinder sudo apt install elfinder=<VERSION_BEFORE_2.1.60> sudo apt-mark hold elfinder

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list elfinder sudo dnf downgrade elfinder-<VERSION_BEFORE_2.1.60> sudo dnf versionlock add elfinder

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Composer (PHP) · studio-42/elfinder · FIXED · 2.1.61 · vulnerable: < 2.1.61 · source

composer require "studio-42/elfinder:>=2.1.61"

Fedora 46 · iodine · FIXED · 0.9.0-2.fc46 · FEDORA-2026-4448545972 · source

sudo dnf upgrade --advisory=FEDORA-2026-4448545972

Fedora ELN · python-idna · FIXED · 3.20-1.eln159 · FEDORA-2026-4421e6642f · source

sudo dnf upgrade --advisory=FEDORA-2026-4421e6642f

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-27115?

elfinder: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-27115 being exploited?

CVE-2022-27115 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-27115 affect?

CVE-2022-27115 affects elfinder. Severity is critical (CVSS 9.8). In Studio-42 elFinder 2.1.60, there is a vulnerability that causes remote code execution through file name bypass for file upload.

How urgent is CVE-2022-27115?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-41247 CRITICAL 9.8 UPGRADE elFinder is an open-source file manager for web, written in JavaScript using jQuery UI
CVE-2024-38909 CRITICAL 9.8 DOWNGRADE Studio 42 elFinder 2.1.64 is vulnerable to Incorrect Access Control
CVE-2023-52045 MEDIUM 6.1 DOWNGRADE Studio-42 eLfinder 2.1.62 contains a filename restriction bypass leading to a persistent Cross-site Scripting
CVE-2023-52044 CRITICAL 9.8 DOWNGRADE Studio-42 eLfinder 2.1.62 is vulnerable to Remote Code Execution (RCE) as there is no restriction for uploadin
CVE-2023-35840 MEDIUM 6.5 UPGRADE _joinPath in elFinderVolumeLocalFileSystem.class.php in elFinder before 2.1.62 allows path traversal in the PH

References

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