CVE-2012-5537: The Simplenews Scheduler module 6.x-2.x before 6.x-2.4 for Drupal allows remote authenticated users with the "

Routine

MEDIUM 6.0DOWNGRADE

CVE-2012-5537 is a medium-severity flaw (CVSS 6.0) affecting simplenews scheduler. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Simplenews Scheduler module 6.x-2.x before 6.x-2.4 for Drupal allows remote authenticated users with the "send scheduled newsletters" permission to inject arbitrary PHP code into the scheduling form, which is later executed by cron.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.0 (Medium)
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-94
Published	2012-12-03
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: simplenews scheduler project

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

Am I affected?

Timeline

2012-12-03 21:55 UTCPublished CVE record published
2026-06-16 23:46 UTCUpdated Record last modified

simplenews scheduler project simplenews scheduler DOWNGRADE

Affected: 6.x-2.0 · 6.x-2.0 beta2 · 6.x-2.0 beta3 · 6.x-2.0 beta4 · 6.x-2.1 · 6.x-2.2 · 6.x-2.3 · 6.x-2.x dev

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.x-2.0

1. Check installed version

apt-cache policy simplenews-scheduler || rpm -q simplenews-scheduler || simplenews-scheduler --version

2. No fixed release: DOWNGRADE to a release before 6.x-2.0 (Debian / Ubuntu)

apt-cache madison simplenews-scheduler sudo apt install simplenews-scheduler=<VERSION_BEFORE_6.x-2.0> sudo apt-mark hold simplenews-scheduler

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

dnf --showduplicates list simplenews-scheduler sudo dnf downgrade simplenews-scheduler-<VERSION_BEFORE_6.x-2.0> sudo dnf versionlock add simplenews-scheduler

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-2012-5537?

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

Is CVE-2012-5537 being exploited?

CVE-2012-5537 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-2012-5537 affect?

CVE-2012-5537 affects simplenews scheduler. Severity is medium (CVSS 6.0). The Simplenews Scheduler module 6.x-2.x before 6.x-2.4 for Drupal allows remote authenticated users with the "send scheduled newsletters" permission to inject arbitrary PHP code into the scheduling form, which is later executed by cron.

How urgent is CVE-2012-5537?

Priority 37/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities · PHP vulnerabilities

References

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