CVE-2016-20005: The REST/JSON project 7.x-1.x for Drupal allows user registration bypass, aka SA-CONTRIB-2016-033

Q: How do I fix CVE-2016-20005?

rest\/json: upgrade to newer than 7.x-1.5. Exact commands for each OS are on this page.

Q: Is CVE-2016-20005 being exploited?

CVE-2016-20005 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-20005 affect?

CVE-2016-20005 affects rest\/json. Severity is critical (CVSS 9.8). The REST/JSON project 7.x-1.x for Drupal allows user registration bypass, aka SA-CONTRIB-2016-033. NOTE: This project is not covered by Drupal's security advisory policy.

Q: How urgent is CVE-2016-20005?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2016-20005 is a critical-severity flaw (CVSS 9.8) affecting rest\/json. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The REST/JSON project 7.x-1.x for Drupal allows user registration bypass, aka SA-CONTRIB-2016-033. NOTE: This project is not covered by Drupal's security advisory policy.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-863
Published	2021-01-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: rest\/json project

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

Am I affected?

Timeline

2021-01-01 01:15 UTCPublished CVE record published
2026-06-17 00:43 UTCUpdated Record last modified

rest\/json project rest\/json UPGRADE

Affected: <= 7.x-1.5

Fixed in: newer than 7.x-1.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 7.x-1.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade restjson

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade restjson

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2016-20005?

rest\/json: upgrade to newer than 7.x-1.5. Exact commands for each OS are on this page.

Is CVE-2016-20005 being exploited?

CVE-2016-20005 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-2016-20005 affect?

CVE-2016-20005 affects rest\/json. Severity is critical (CVSS 9.8). The REST/JSON project 7.x-1.x for Drupal allows user registration bypass, aka SA-CONTRIB-2016-033. NOTE: This project is not covered by Drupal's security advisory policy.

How urgent is CVE-2016-20005?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Drupal vulnerabilities

Related CVEs

CVE-2016-20008 HIGH 7.5 UPGRADE The REST/JSON project 7.x-1.x for Drupal allows session enumeration, aka SA-CONTRIB-2016-033
CVE-2016-20007 HIGH 7.5 UPGRADE The REST/JSON project 7.x-1.x for Drupal allows session name guessing, aka SA-CONTRIB-2016-033
CVE-2016-20006 HIGH 7.5 UPGRADE The REST/JSON project 7.x-1.x for Drupal allows blockage of user logins, aka SA-CONTRIB-2016-033
CVE-2016-20004 CRITICAL 9.8 UPGRADE The REST/JSON project 7.x-1.x for Drupal allows field access bypass, aka SA-CONTRIB-2016-033
CVE-2016-20003 HIGH 7.5 UPGRADE The REST/JSON project 7.x-1.x for Drupal allows user enumeration, aka SA-CONTRIB-2016-033

References

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