CVE-2015-4367: Cross-site scripting (XSS) vulnerability in the Simple Subscription module before 6.x-1.1 and 7.x-1.x before 7

Routine

LOW 3.5DOWNGRADE

CVE-2015-4367 is a low-severity flaw (CVSS 3.5) affecting simple subscription. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the Simple Subscription module before 6.x-1.1 and 7.x-1.x before 7.x-1.1 for Drupal allows remote authenticated users with the "administer blocks" permission to inject arbitrary web script or HTML via vectors related to block content.

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	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-79
Published	2015-06-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: simple subscription 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

simple subscription project simple subscription DOWNGRADE

Affected: 6.x-1.0 · 7.x-1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.x-1.0

1. Check installed version

apt-cache policy simple-subscription || rpm -q simple-subscription || simple-subscription --version

2. No fixed release: DOWNGRADE to a release before 6.x-1.0 (Debian / Ubuntu)

apt-cache madison simple-subscription sudo apt install simple-subscription=<VERSION_BEFORE_6.x-1.0> sudo apt-mark hold simple-subscription

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

dnf --showduplicates list simple-subscription sudo dnf downgrade simple-subscription-<VERSION_BEFORE_6.x-1.0> sudo dnf versionlock add simple-subscription

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-2015-4367?

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

Is CVE-2015-4367 being exploited?

CVE-2015-4367 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-2015-4367 affect?

CVE-2015-4367 affects simple subscription. Severity is low (CVSS 3.5). Cross-site scripting (XSS) vulnerability in the Simple Subscription module before 6.x-1.1 and 7.x-1.x before 7.x-1.1 for Drupal allows remote authenticated users with the "administer blocks" permission to inject arbitrary web script or HTML

How urgent is CVE-2015-4367?

Priority 28/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

References

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