CVE-2018-14836: Subrion 4.2.1 is vulnerable to Improper Access control because user groups not having access to the Admin pane

Routine

MEDIUM 6.5DOWNGRADE

CVE-2018-14836 is a medium-severity flaw (CVSS 6.5) affecting subrion cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Subrion 4.2.1 is vulnerable to Improper Access control because user groups not having access to the Admin panel are able to access it (but not perform actions) if the Guests user group has access to the Admin panel.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-269
Published	2018-08-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: subrion

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

Am I affected?

Timeline

2018-08-02 00:29 UTCPublished CVE record published
2026-06-17 01:41 UTCUpdated Record last modified

subrion subrion cms DOWNGRADE

Affected: 4.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2.1

1. Check installed version

apt-cache policy subrion-cms || rpm -q subrion-cms || subrion-cms --version

2. No fixed release: DOWNGRADE to a release before 4.2.1 (Debian / Ubuntu)

apt-cache madison subrion-cms sudo apt install subrion-cms=<VERSION_BEFORE_4.2.1> sudo apt-mark hold subrion-cms

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

dnf --showduplicates list subrion-cms sudo dnf downgrade subrion-cms-<VERSION_BEFORE_4.2.1> sudo dnf versionlock add subrion-cms

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-2018-14836?

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

Is CVE-2018-14836 being exploited?

CVE-2018-14836 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-2018-14836 affect?

CVE-2018-14836 affects subrion cms. Severity is medium (CVSS 6.5). Subrion 4.2.1 is vulnerable to Improper Access control because user groups not having access to the Admin panel are able to access it (but not perform actions) if the Guests user group has access to the Admin panel.

How urgent is CVE-2018-14836?

Priority 38/100. No elevated risk signals yet.

Related CVEs

CVE-2020-18326 HIGH 8.8 DOWNGRADE Cross Site Request Forgery (CSRF) vulnerability exists in Intelliants Subrion CMS v4.2.1 via the Members admin
CVE-2020-18325 MEDIUM 6.1 DOWNGRADE Multilple Cross Site Scripting (XSS) vulnerability exists in Intelliants Subrion CMS v4.2.1 in the Configurati
CVE-2020-18324 MEDIUM 6.1 DOWNGRADE Cross Site Scripting (XSS) vulnerability exists in Subrion CMS 4.2.1 via the q parameter in the Kickstart temp
CVE-2025-70958 MEDIUM 6.1 DOWNGRADE Multiple reflected cross-site scripting (XSS) vulnerabilities in the installation module of Subrion CMS v4.2.1
CVE-2025-56556 LOW 3.8 DOWNGRADE An issue was discovered in Subrion CMS 4.2.1, allowing authenticated adminitrators or moderators with access t

References

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