CVE-2015-5491: The Dynamic display block module 7.x-1.x before 7.x-1.1 for Drupal allows remote authenticated users to bypass

Routine

LOW 3.5DOWNGRADE

CVE-2015-5491 is a low-severity flaw (CVSS 3.5) affecting dynamic display block. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Dynamic display block module 7.x-1.x before 7.x-1.1 for Drupal allows remote authenticated users to bypass intended access restrictions and read sensitive titles by leveraging the "administer ddblock" permission.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	3.5 (Low)
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-200
Published	2015-08-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dynamic display block project

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

Am I affected?

Timeline

2015-08-18 17:59 UTCPublished CVE record published
2026-06-17 00:29 UTCUpdated Record last modified

dynamic display block project dynamic display block DOWNGRADE

Affected: 7.x-1.0 beta1 · 7.x-1.0 rc1 · 7.x-1.x dev

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.x-1.0

1. Check installed version

apt-cache policy dynamic-display-block || rpm -q dynamic-display-block || dynamic-display-block --version

2. No fixed release: DOWNGRADE to a release before 7.x-1.0 (Debian / Ubuntu)

apt-cache madison dynamic-display-block sudo apt install dynamic-display-block=<VERSION_BEFORE_7.x-1.0> sudo apt-mark hold dynamic-display-block

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

dnf --showduplicates list dynamic-display-block sudo dnf downgrade dynamic-display-block-<VERSION_BEFORE_7.x-1.0> sudo dnf versionlock add dynamic-display-block

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-2015-5491?

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

Is CVE-2015-5491 being exploited?

CVE-2015-5491 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-2015-5491 affect?

CVE-2015-5491 affects dynamic display block. Severity is low (CVSS 3.5). The Dynamic display block module 7.x-1.x before 7.x-1.1 for Drupal allows remote authenticated users to bypass intended access restrictions and read sensitive titles by leveraging the "administer ddblock" permission.

How urgent is CVE-2015-5491?

Priority 28/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

References

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