CVE-2012-5551: Multiple cross-site scripting (XSS) vulnerabilities in the MailChimp module 7.x-2.x before 7.x-2.7 for Drupal

Routine

MEDIUM 4.3DOWNGRADE

CVE-2012-5551 is a medium-severity flaw (CVSS 4.3) affecting mailchimp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in the MailChimp module 7.x-2.x before 7.x-2.7 for Drupal allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) a predictable "webhook URL key" and (2) improper sanitization of "Webhook variables from POST requests."

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)
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-79
Published	2012-12-03
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: thinkshout

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

thinkshout mailchimp DOWNGRADE

Affected: 7.x-2.0 · 7.x-2.0 alpha1 · 7.x-2.0 beta1 · 7.x-2.0 beta2 · 7.x-2.0 rc1 · 7.x-2.0 rc2 · 7.x-2.1 · 7.x-2.2

Fixed in: no fixed release known

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

1. Check installed version

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

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

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

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

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

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-2012-5551?

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

Is CVE-2012-5551 being exploited?

CVE-2012-5551 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-2012-5551 affect?

CVE-2012-5551 affects mailchimp. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in the MailChimp module 7.x-2.x before 7.x-2.7 for Drupal allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) a predictable "webhook URL key" and (2) i

How urgent is CVE-2012-5551?

Priority 32/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

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References

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