CVE-2016-3188: The _prepopulate_request_walk function in the Prepopulate module 7.x-2.x before 7.x-2.1 for Drupal allows remo

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HIGH 7.3REMOTEDOWNGRADE

CVE-2016-3188 is a high-severity flaw (CVSS 7.3) affecting prepopulate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The _prepopulate_request_walk function in the Prepopulate module 7.x-2.x before 7.x-2.1 for Drupal allows remote attackers to modify the (1) actions, (2) container, (3) token, (4) password, (5) password_confirm, (6) text_format, or (7) markup field type, and consequently have unspecified impact, via unspecified vectors.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-264
Published	2016-04-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: prepopulate project

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

Am I affected?

Timeline

2016-04-08 14:59 UTCPublished CVE record published
2026-06-17 00:45 UTCUpdated Record last modified

prepopulate project prepopulate DOWNGRADE

Affected: 7.x-2.0 · 7.x-2.x dev

Fixed in: no fixed release known

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

1. Check installed version

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

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

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

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

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

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-2016-3188?

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

Is CVE-2016-3188 being exploited?

CVE-2016-3188 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-2016-3188 affect?

CVE-2016-3188 affects prepopulate. Severity is high (CVSS 7.3). The _prepopulate_request_walk function in the Prepopulate module 7.x-2.x before 7.x-2.1 for Drupal allows remote attackers to modify the (1) actions, (2) container, (3) token, (4) password, (5) password_confirm, (6) text_format, or (7) mark

How urgent is CVE-2016-3188?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

Software pages

Drupal vulnerabilities

Related CVEs

CVE-2016-3187 HIGH 7.3 DOWNGRADE The Prepopulate module 7.x-2.x before 7.x-2.1 for Drupal allows remote attackers to modify the REQUEST supergl

References

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