CVE-2020-26506: An Authorization Bypass vulnerability in the Marmind web application with version 4.1.141.0 allows users with

Routine

MEDIUM 4.3DOWNGRADE

CVE-2020-26506 is a medium-severity flaw (CVSS 4.3) affecting marmind. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An Authorization Bypass vulnerability in the Marmind web application with version 4.1.141.0 allows users with lower privileges to gain control to files uploaded by administrative users. The accessed files were not visible by the low privileged users in the web GUI.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-670, CWE-863
Published	2020-11-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: marmind

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

Am I affected?

Timeline

2020-11-05 16:15 UTCPublished CVE record published
2026-06-17 03:08 UTCUpdated Record last modified

marmind marmind DOWNGRADE

Affected: 4.1.141.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.141.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.141.0 (Debian / Ubuntu)

apt-cache madison marmind sudo apt install marmind=<VERSION_BEFORE_4.1.141.0> sudo apt-mark hold marmind

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

dnf --showduplicates list marmind sudo dnf downgrade marmind-<VERSION_BEFORE_4.1.141.0> sudo dnf versionlock add marmind

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.

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-2020-26506?

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

Is CVE-2020-26506 being exploited?

CVE-2020-26506 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-2020-26506 affect?

CVE-2020-26506 affects marmind. Severity is medium (CVSS 4.3). An Authorization Bypass vulnerability in the Marmind web application with version 4.1.141.0 allows users with lower privileges to gain control to files uploaded by administrative users. The accessed files were not visible by the low privile

How urgent is CVE-2020-26506?

Priority 34/100. Public exploit reference

Related CVEs

CVE-2020-26507 HIGH 7.8 DOWNGRADE A CSV Injection (also known as Formula Injection) vulnerability in the Marmind web application with version 4.
CVE-2020-26505 MEDIUM 6.1 DOWNGRADE A Stored Cross-Site Scripting (XSS) vulnerability in the “Marmind” web application with version 4.1.141.0 allo

References

← Back to latest CVEs