CVE-2026-29909: MRCMS V3.1.2 contains an unauthenticated directory enumeration vulnerability in the file management module

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MEDIUM 5.3REMOTEDOWNGRADE

CVE-2026-29909 is a medium-severity flaw (CVSS 5.3) affecting mrcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MRCMS V3.1.2 contains an unauthenticated directory enumeration vulnerability in the file management module. The /admin/file/list.do endpoint lacks authentication controls and proper input validation, allowing remote attackers to enumerate directory contents on the server without any credentials.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-20, CWE-425
Published	2026-03-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mrcms

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

Am I affected?

Timeline

2026-03-30 17:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

mrcms mrcms DOWNGRADE

Affected: 3.1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.1.2 (Debian / Ubuntu)

apt-cache madison mrcms sudo apt install mrcms=<VERSION_BEFORE_3.1.2> sudo apt-mark hold mrcms

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

dnf --showduplicates list mrcms sudo dnf downgrade mrcms-<VERSION_BEFORE_3.1.2> sudo dnf versionlock add mrcms

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-2026-29909?

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

Is CVE-2026-29909 being exploited?

CVE-2026-29909 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-2026-29909 affect?

CVE-2026-29909 affects mrcms. Severity is medium (CVSS 5.3). MRCMS V3.1.2 contains an unauthenticated directory enumeration vulnerability in the file management module. The /admin/file/list.do endpoint lacks authentication controls and proper input validation, allowing remote attackers to enumerate d

How urgent is CVE-2026-29909?

Priority 38/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-31272 CRITICAL 9.8 DOWNGRADE MRCMS 3.1.2 contains an access control vulnerability

References

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