CVE-2013-4228: The OG access fields (visibility fields) implementation in Organic Groups (OG) module 7.x-2.x before 7.x-2.3 f

Routine

MEDIUM 4.3DOWNGRADE

CVE-2013-4228 is a medium-severity flaw (CVSS 4.3) affecting organic groups. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The OG access fields (visibility fields) implementation in Organic Groups (OG) module 7.x-2.x before 7.x-2.3 for Drupal does not properly restrict access to private groups, which allows remote authenticated users to guess node IDs, subscribe to, and read the content of arbitrary private groups via unspecified vectors.

Why this priority

No elevated risk signals yet

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	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-863
Published	2020-02-18
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: organic groups project

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-18 19:15 UTCPublished CVE record published
2026-06-16 23:56 UTCUpdated Record last modified

organic groups project organic groups DOWNGRADE

Affected: 7.x-2.0 · 7.x-2.0 alpha1 · 7.x-2.0 alpha2 · 7.x-2.0 alpha3 · 7.x-2.0 beta1 · 7.x-2.0 beta2 · 7.x-2.0 beta3 · 7.x-2.0 beta4

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.x-2.0

1. Check installed version

apt-cache policy organic-groups || rpm -q organic-groups || organic-groups --version

2. No fixed release: DOWNGRADE to a release before 7.x-2.0 (Debian / Ubuntu)

apt-cache madison organic-groups sudo apt install organic-groups=<VERSION_BEFORE_7.x-2.0> sudo apt-mark hold organic-groups

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

dnf --showduplicates list organic-groups sudo dnf downgrade organic-groups-<VERSION_BEFORE_7.x-2.0> sudo dnf versionlock add organic-groups

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-2013-4228?

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

Is CVE-2013-4228 being exploited?

CVE-2013-4228 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-2013-4228 affect?

CVE-2013-4228 affects organic groups. Severity is medium (CVSS 4.3). The OG access fields (visibility fields) implementation in Organic Groups (OG) module 7.x-2.x before 7.x-2.3 for Drupal does not properly restrict access to private groups, which allows remote authenticated users to guess node IDs, subscrib

How urgent is CVE-2013-4228?

Priority 32/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

References

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