CVE-2015-4383: Cross-site request forgery (CSRF) vulnerability in the Decisions module for Drupal allows remote attackers to

Routine

MEDIUM 6.8DOWNGRADE

CVE-2015-4383 is a medium-severity flaw (CVSS 6.8) affecting decisions. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site request forgery (CSRF) vulnerability in the Decisions module for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that remove individual voters 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	6.8 (Medium)
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-352
Published	2015-06-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: decisions project

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

Am I affected?

Timeline

2015-06-15 14:59 UTCPublished CVE record published
2026-06-17 00:27 UTCUpdated Record last modified

decisions project decisions DOWNGRADE

Affected: 6.x-1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.x-1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.x-1.1 (Debian / Ubuntu)

apt-cache madison decisions sudo apt install decisions=<VERSION_BEFORE_6.x-1.1> sudo apt-mark hold decisions

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

dnf --showduplicates list decisions sudo dnf downgrade decisions-<VERSION_BEFORE_6.x-1.1> sudo dnf versionlock add decisions

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-2015-4383?

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

Is CVE-2015-4383 being exploited?

CVE-2015-4383 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-2015-4383 affect?

CVE-2015-4383 affects decisions. Severity is medium (CVSS 6.8). Cross-site request forgery (CSRF) vulnerability in the Decisions module for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that remove individual voters via unspecified vectors.

How urgent is CVE-2015-4383?

Priority 36/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

References

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